12001+7039 STT 242     C is BD+71@595 according to ADS, but A and C may be reversed.                   
12001+4107 LDS5212     LDS6257.                                                                        
12001-7812 FGL   2     DX Cha. Hen 3-741. Noted as possible binary (separation > 0".040) by            
                       Baines et al. (2006)                                                    Bns2006 
                       B, C, D, and E components were resolved by Feigelson et al. (2003)     Fgl2003  
                       using Chandra ACIS-I (Advanced CCD Imaging Spectrometer Imager).                
                       Additional wide components G, H, I, J, and K, as well as closer F               
                       companion were resolved by Grady et al (2004) using data from HST/STIS  Gry2004 
                       and VLT/NACO. Their theta values for AD and AE appear to be in error;           
                       correct values are perhaps 180-71=109deg and 180-74=106deg?                     
                       Grady et al. provided no relative astrometry for the H, I, J, and K             
                       companions. Coarse values were extracted by the cataloguer using                
                       Aladin, based on their Figure 4.                                                
12002+8700 STF1583     STT 238. B is BD+87@100.                                                        
12002+3644 STTA114     B is BD+37@2239.                                                                
12003-3552 SWR 123     CPM pair                                                                Skf2004 
12005-0433 EGN  13     Pair bound. B component is likely an M2.5-M4.5 dwarf with mass 0.23             
                       +/- 0.01 Msun.                                                          Egn2007 
12006+6911 A  1088     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 21.73 +/- 14.44, 4.11, and 1.35 Msun, respectively.           Mlk2012 
12007+2051 BDK   5     G 121-42 + 2MASS J12003292+2048513. Distance 30 +14/-7 pc for primary,          
                       26 +/- 3 pc for secondary. Estimated age of system 4-5 Gyr. Mass of             
                       secondary estimated at 0.085-0.103 Msun.                                Fah2010 
12007-1027 SCP   1     Schnupp et al. (2010) determine spectral types G8-K0IV and M4V, masses          
                       1.01 and 0.21 +0.03/-0.02 Msun for the two components.                  Scp2010 
12009+0637 pi Vir      Hipparcos astrometric solution adopted some elements from the orbit of  HIP1997d
                       Abt (1965).                                                             AbH1965 
12015-0023 STF1591     STTA115. B is BD+00@2877.                                                       
12016+4731 KZA  24     30' error in WDS designation                                                    
12016-6000 WFC 121     JAW  30.                                                                        
12018-3439 I   215     A premature orbit has been computed. The motion is nearly rectilinear,          
                       but the sizable proper motion proves the physical nature.                       
                       The position given by Bespalov is that of HLD 114.                      Bsp1961 
                       The primary is a double-lined SB, now SB3. Tokovinin et al. (2014)              
                       derived a solution (P=148.14d, e=0.430) and estimated the angular               
                       separation at 13 mas, meaning it should be resolvable by speckle on an          
                       8m telescope. They also revised the orbit of the AB pair. Estimated             
                       masses for Aa, Ab, and B are all similar: 1.15, 1.16, and 1.12 Msun.    Tok2015a
12019+0006 STTA116     B is BD+00@2881.                                                                
12021+4303 FOR   1     67 UMa. A is a Delta Scuti-type variable, DP UMa.                               
                       Position of B (+43@2182): 12 02.5 +43 05.                                       
12023-8538 HJ 4490     B is CPD-84@372.                                                                
12025+1646 OSO  44     LHS2500. Not a common proper motion pair, based on astrometry and               
                       color.                                                                  Oso2004 
12027-1043 SHY 588     AC: HIP  58722 + HIP  58751.                                                    
12028+4205 BFR   7     NLTT 29392 + 2MASS J12025009+4204531. Baron et al. (2015) estimate              
                       spectral types M6.0 +/- 0.5 and L0.0 +/- 0.5, distances 33 +2/-16 and           
                       38 +2/-11 pc, masses 0.102-0.133 and 0.074-0.081 Msun.                  BFr2015 
12029-1908 B  2536     J 1602.                                                                         
12030-6319 CPO  55     the 1 Cru. A is a spectroscopic binary.                                         
12031+4719 OSO  45     G122-069. Not a common proper motion pair, based on astrometry and              
                       color.                                                                  Oso2004 
12033+2902 LDS1275     AB: NLTT 29413/29414                                                    Chm2004 
12036+7932 LDS1746     CBL 553. The pair was long lost, due to a 1deg error in the published           
                       declination, until its rediscovery by Caballero (2012).                 Cbl2012b
12036-3901 SEE 143     89 Cen.                                                                         
                       Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 2.31 +/- 1.26, 2.46, and 1.13 Msun, respectively.             Mlk2012 
12038-4407 HJ 4491     LDS 380. B is CD-43@7447.                                                       
                       SHY 589. Bayesian analysis by Shaya & Olling (2011) indicates very      Shy2011 
                       high (near 100%) probability pair is physical.                                  
12039+4257 LDS4174     NLTT 29456/29454                                                        Chm2004 
12040+0321 ENG  46     B is BD+04@2568.                                                                
                       Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
12042+2407 A   682     A close approach took place from about 1960-1975.                               
12043+2128 STF1596     2 Com. A spectroscopic binary.                                                  
                       H 2  47.                                                                MEv2010 
12047-0546 RST4492     A is the semiregular variable RX Vir.                                           
12048-4003 RST1641     CPD-39@5381.                                                                    
12048-6200 DUN 117     B is CPD-61@2935.                                                               
12048-6704 DON1095     CD-66@1160.                                                                     
12049+1729 LEP  49     NI   29.                                                                        
12049+0910 STF1597     B is BD+09@2580.                                                                
12051+1933 GIC 103     LDS5748. G121-052/G121-053.                                                     
                       NLTT 29534/29540                                                        Chm2004 
12051-6111 FIN 421     The composite spectrum is unlikely to refer to B.                               
12054-2636 RST2777     Motion direct, companion optical.                                               
                       HIP 58962. See Allen et al. (2000) for information on metallicity,      AlC2000 
           LDS 383     age, galactic orbital parameters, etc.                                          
                       AC: NLTT 29556/29553                                                    Chm2004 
12056+6848 STF1599     Djurkovic measured component Ee: 70@, 0.2", 8-8,                                
                       but van den Bos found this round in 1958.                                       
12056+5659 A  1358     Aka HDS1700.                                                                    
12058+5355 CBL  52     Also known as DAL  43.                                                          
12058-1853 WNO  54     GJ 9387 + NLTT 29580. CPM pair.                                         Mkr2008 
12058-6934 GS Mus      Harmanec (1987 Bull. Astron. Inst. Czech. 38, 283) gives a preliminary          
                       orbit with P = 1.74 d and K = 12.4 km/sec.  The same period and its             
                       double also appear in photometry (van Genderen et al. 1989 A&A 213,             
                       161), so the radial velocity variations may be related to pulsation             
                       instead of orbital motion.  The radial velocity variations are also             
                       discussed by Walborn et al. (1980 PASP 92, 284) and Levato et al.       Lev1988 
                       (1988).                                                                 Msn1998a
12059-4951 HJ 4494     CPD-49@4827.                                                                    
                       AB = SWR 124. CPM pair.                                                         
                       Third component 24" N, CPD-49 4827, is not CPM                          Skf2004 
12060+6842 STF3123     AB: Additional notes may be found in Fu et al. (1997).                  McA1997 
                       Star C (mag. 15, 3") is probably physical.                                      
                       AB: Malkov et al. (2012) derive dynamical, photometric, and                     
                       spectroscopic masses 3.51 +/- 0.88, 3.36, and 1.17 Msun, respectively.  Mlk2012 
12061+7022 A    76     LDS1748. B is BD+71@603.                                                        
                       AB: HJL 163.                                                            HJL1986 
12061-3258 HJ 4495     HIP 59021. Both components A,B are above the MS by 1.5 mag. Wrong       Tok2011a
                       parallax? The photometric parallax would be ~40 mas. See Holmberg et    Nrd2009 
                       al. (2009) for improved distance. Planet host?                          Nid2002 
                       AB: B is SB2, P=148.26d. A is SB and possible astrometric binary,       Tok2010c
                       although not resolved with NICI (Tokovinin et al. 2010)                 Tok2014d
12062-2002 B  1714     A rapid binary, angles and period uncertain.                                    
12063+5243 SKF2827     Superposed on west side of galaxy NGC 4102. Pair first noticed by       Skf2017f
                       Steve Gottlieb.                                                                 
12064-1315 JNN  77     Due to the small separation (~0.42") of the companion detected in the           
                       AstraLux images, it is likely a physical companion, although common             
                       proper motion has not yet been tested.                                  Jnn2012 
                       Bowler et al. (2015) confirm the physical nature and detect orbital             
                       motion. Riaz et al. (2006 AJ 132, 866) identify the pair as                     
                       chromospherically active.                                               Bwl2015 
12064-4858 BRT 805     CPD-48@4508.                                                                    
12064-6543 FIN 367     Composite spectrum; G8-K0III+A3.                                                
                       Aa,Ab: Docobo & Andrade (2013) derive a dynamical parallax of 8.11 +/-          
                       0.42 mas and component masses 2.0 +/- 0.5 and 2.0 +/- 0.1 Msun. See             
                       paper for extensive notes on this system.                               Doc2013d
12066-3752 HJ 4500     B is CD-37@7665.                                                                
12067-6114 JAW  32     Also known as R    187.                                                         
12068+4450 FAR  13     AC: Primary is white dwarf WD 1204+450.                                 Far2005b
12069+7008 SKF 237     Aside from the spatially resolved companion, the primary in the 2MASS           
                       J1206557+700749 system is a known spectroscopic binary with a                   
                       semi-major axis less than 0.03 au. This is well consistent with our             
                       AstraLux data, where the primary is significantly brighter than the             
                       secondary, despite having about equal spectral type. Hence, the system          
                       is a triple in reality.                                                 Jnn2012 
12069-6437 HJ 4501     eta Cru. A is a spectroscopic binary.                                           
12071+6905 STF1602     The A component is a spectroscopic triple, P = 3.87d and 6.5y.                  
12073+4306 HJ 2596     Burnham measured a separation of 224.8" at approximately the same       Bu_1913 
                       position angle (239.3) on 1911.22 to NGC 4111 with the 40".                     
12073-7338 NZO  27     Not found by Heintz at IDS position.                                    Hei1990b
12075+1302 LDS4179     HIP 59126. See Allen et al. (2000) for information on metallicity,      AlC2000 
                       age, galactic orbital parameters, etc.                                          
                       NLTT 29665/29661                                                        Chm2004 
12076-3933 CVN  12     Relative astrometry from Chauvin et al. (2004) was slightly modified    Cvn2004 
                       by Chauvin et al. (2005).                                               Cvn2005b
           SON   1     AC: C component is a field star.                                        Son2006 
12081+5528 STF1603     LDS1278. B is BD+56@1569.                                                       
                       HJL 164.                                                                HJL1986 
                       H 4 108.                                                                MEv2010 
12082+3227 HJ  844     SEI 528.                                                                Nsn2017b
12084-5043 JC    2     A: del Cen. Both A and B are Be stars.                                          
                       B: CD-49 6813. B is the variable V863 Cen.                                      
           MLD   1     Aa,Ab: A component was resolved in K-band using the A0-K0-G1 and        Mld2008 
                       E0-G0-H0 baselines with VLTI/AMBER. The magnitude difference in K was           
                       2.89 +/- 0.16 mag.                                                              
12088-4023 Anon        EQ 1206-4006                                                                    
                       ID as EQ 1206-4006 uncertain; based on Simbad search using epoch-1950           
                       coordinates 120613-400627 from White et al. (1991).                     Whi1991 
12089+2147 LDS 930     G059-001. See Allen et al. (2000) for information on metallicity,       AlC2000 
                       age, galactic orbital parameters, etc.                                          
12091-7847 SHY 592     HIP  59243 + HIP  58490.                                                        
12092+1450 TOK 148     HIP 59250.                                                                      
12093-8459 R   188     Also appears to be R   182.                                                     
12094-3409 RST2782     Spectrum: G5/6III/IV.                                                           
12094-5127 I  1218     AC = SWR 126. CPM pair                                                  Skf2004 
12094-6349 HRG  74     Pretty pair. Three distant companions.                                  I__1917a
12095+3838 MET   8     Metchev & Hillenbrand say the pair is probably optical, based on                
                       proximity.                                                              Met2004b
12095-1151 STF1604     AB: Mt. Wilson spectral types are G2 and K8. A is a spectroscopic               
                       binary, and slightly variable. Large relative proper motion, coupled            
                       with the fact that the C component is brighter than B, has led to some          
                       confusion in identification of components.                                      
                       AB: NLTT 29769/29772                                                    Chm2004 
                       HIP 59272.                                                              Tok2011a
12097+0154 BUP 138     10 Vir.                                                                         
12099-1004 LIM   2     2MASS J12095613-1004008. T dwarf, spectral types estimated by Liu et    LiM2010 
                       el. (2010) at T2.0 +/-  0.5 and T7.5 +/- 0.5. Photometric distance 21           
                       +/- 4 pc. Possible masses and effective temperatures are determined             
                       for a range of age estimates.                                                   
12101+0526 TOK 282     AC: 12100+0527 TOK 282 and 12101+0526 WOR  22 found to share same               
                       primary; systems merged.                                                        
12101-4334 CPO  56     B is CD-42@7455.                                                                
12102+1438 BPM 586     [PM2000] 1025354 + [PM2000] 1025384.                                    Gvr2010 
12103-0627 HJ 1213     LDS 387.                                                                        
12105+1649 CHR 135     3 Com.                                                                          
12108+3953 STF1606     A: Preliminary orbit by van der Wiele (1974) calculated to fit          vdW1974 
                       perturbations seen to long-period orbit.                                        
12110+8143 SHJ 136     BDS 6074, STTA117 = STTA118. B is BD+82@357.                                    
12110+1704 BPM 587     [PM2000] 1025639 + [PM2000] 1025679.                                    Gvr2010 
12113+3316 HJ 2600     LDS 932.                                                                        
12113-1958 LDS 390     NLTT 29876/29879                                                        Chm2004 
12114+4334 LDS4186     B is BD+44@2169.                                                                
                       A, B, and C are NLTT 29895, 29881, and 29896. B and C are below MS in           
                       (K,V-K) and to the left in (J,J-K). Sub-dwarfs?                         Tok2014d
12114-6057 RST4493     Spectral type B5?                                                               
12115+5325 STF1608     AB: LDS1284. Mt. Wilson spectral types are K2 and G9.                           
                       HJL 165.                                                                HJL1986 
           SHY 233     AC: HIP  59432 + HIP  60121.                                                    
12118+2400 LDS6258     AB: SAND 26.                                                                    
           LDS5749     AC: Assignment of LDS6258 and 5749 as AB and AC pairs is uncertain.             
12118+2319 GC 16657    Hipparcos astrometric solution adopted some elements from the orbit of  HIP1997d
                       Griffin (1985).  Cluster Melotte 111 #AV442.                            Grf1985a
12119+2552 4 Com       Hipparcos astrometric solution adopts some elements from the orbits of  HIP1997d
                       Harper (1930) and Harper (1930).                                        Hrp1930a
                       Cluster Melotte 111 #AV448.                                             Hrp1930b
                       Ren & Fu (2013) calculated an astrometric orbit, combining Hipparcos    Ren2013 
                       Intermediate Astrometric Data with spectroscopic elements by                    
                       Harper (1930).                                                          Hrp1930a
12120+3850 LDS4188     SLW 693.                                                                        
12121+2459 LAS   4     Lasgoity (2014) determines that the two components of the pair in the           
                       region of the Coma Berenice star cluster share common proper motion.            
                       He derives spectral types of M3.5V for both components, and estimates           
                       distance, mass, and radius for both stars.                              Las2014a
12123+5429 VYS   5     LDS5213.                                                                        
                       NLTT 29950/29949                                                        Chm2004 
12123-0621 LDS4189     NLTT 29948/29967                                                        Chm2004 
12125+2509 LAS   5     Lasgoity (2014) determines that the two components of the pair in the           
                       region of the Coma Berenice star cluster share common proper motion.            
                       He derives spectral types of K0V and K3V for the two components, and            
                       estimates distance, mass, and radius for both stars.                    Las2014a
12125-0305 LPM 416     HIP 59532. See Allen et al. (2000) for information on metallicity,      AlC2000 
                       age, galactic orbital parameters, etc.                                          
                       No companions detected with NACO (Eggenberger et al. 2007).             Egn2007 
12127+1631 BPM 588     [PM2000] 1026292 + [PM2000] 1026283.                                    Gvr2010 
12128-7009 EVS  17     Primary is the Cepheid S Mus.                                           Evs2016a
12129-4454 HJ 4507     B is CD-44@7860.                                                                
12130+2146 JNN 277     Estimated age 1000-10000 Myr; masses 0.24 +/- 0.08 and 0.12 +/- 0.03            
                       Msun; a ~4.7 au.                                                        Jnn2014 
12135-4847 CBL 142     AC: Secondary of 12135-4848 CBL 142 found to be primary of 12135-4847           
                       TDS8273; systems merged, with quadrant of CBL 142 flipped 180deg.               
12137-1123 JNN  78     LP 734-84.                                                                      
                       A companion to 2MASS J12134173-1122405 is detected in the AstraLux              
                       images which has not yet been tested for common proper motion, but the          
                       color and brightness is consistent with the expectation for a                   
                       physically bound companion.                                             Jnn2012 
12140-4543 RMK  14     A is a spectroscopic binary.                                                    
12141+3247 STF1615     B is a spectroscopic binary.                                                    
                       AB: HJL 166.                                                            HJL1986 
12143+1149 HU 1137     A is a W UMa-type system, AH Vir.                                               
                       Pribulla & Rucinski (2006) estimate the mass of the contact pair at     Pbl2006 
                       1.900 Msun and the minimum mass of the wider component at 0.65 Msun.            
12143-0543 HJ  203     A is the Delta Scuti-type variable FG Vir.                                      
12145+0847 STF1616     The declination differences between A and BD+09@2600 have been                  
                       measured. See ADS.                                                      A__1932a
                       AC: HJL 167.                                                            HJL1986 
                       AB: H 4 114.                                                            MEv2010 
12148-5547 HJ 4508     B is CPD-55@4937.                                                               
           SHY 597     AC: HIP  59716 + HIP  59960.                                                    
           SHY 582     AD: HIP  59716 + HIP  57950.                                                    
12149-6058 R   195     R  57 also measures in the same field, 8.95" @ 276.9 deg.                       
12151-0715 STF1619     AB: NLTT 30106/30107                                                    Chm2004 
                       C is BD-06@3533.                                                                
                       A rectilinear solution to AB gives a poor fit, due to slight apparent           
                       curvature suggesting very long-period orbital motion.                           
                       AB: The AB pair is comprised of a K0V and a K1V star, at a distance of          
                       35.19 +/- 0.74pc. The C component is not a physical companion. Rica et          
                       al. (2017) derive a combined spectroscopic/astrometric orbit of AB,             
                       finding a period of 4800 years and a separation of 345au. The orbit is          
                       perturbed by a circumprimary planet of mass 9.6 Mjup, previously                
                       discovered through radial velocity variations (Mayor et al., 2011 A&A           
                       submitted, arXiv:1109.2497M)                                            FMR2017 
12152-1019 BUP 139     Proper motion of A +036 -1016.                                                  
                       A: Hipparcos astrometric solution assumed circular orbit (e = omega     HIP1997d
                       = 0). Spectroscopic solution to this astrometric pair given by Griffin  Grf2013a
                       (2013). Periods match "tolerably well," other common elements less so.          
                       A: Ren & Fu (2013) calculated an astrometric orbit, combining                   
                       Hipparcos Intermediate Astrometric Data with spectroscopic elements by          
                       Carney et al. (2001). They derived component masses 1.09 and 0.48 Msun  Crn2001 
                       and an estimated semimajor axis of 91.99 mas.                           Ren2013 
12154+5702 BLL  29     69 UMa = del UMa = Megrez. Smyth's quoted separation is difference in   Smy1844 
                       RA only.                                                                        
12158-1733 RBR   5     = gam Crv = Gienah                                                              
                       Found to be a common proper motion companion.                           Jnn2011b
12158-2321 BU  920     Bespalov orbit rejected from Fourth Orbit Catalog                       Bsp1961 
                       ("orbit completely faulty and irreparable")                             Wor1983 
                       Rica (2012) derived a dynamical parallax of 15.6 mas (compared with     FMR2012g
                       14.37 +/- 0.71 mas from Hipparcos) and a mass sum (using the Hipparcos          
                       parallax) of 3.60 +/- 0.93 Msun.                                                
12159-4417 SWR 128     CPM pair                                                                Skf2004 
12160+4807 HU  736     Value of Omega inadvertently copied as omega as well by Baize (1993).   Baz1993b
12160+0538 STF1621     Additional notes may be found in Baize (1948) and                       Baz1948b
                       Couteau (1955).                                                         Cou1955a
                       One component probably has variable RV (Wilson 1967, AJ, 72, 905).              
                       Indeterminate (long) period, useable a^3/P^2. Poor Hipparcos parallax.  Sod1999 
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
12161+4040 STF1622     2 CVn. A is a spectroscopic binary.                                             
                       H 3  85.                                                                MEv2010 
12162+8008 STF1625     B is BD+80@380.                                                                 
12162+0443 STF1623     HJL 168.                                                                HJL1986 
12163+4057 FMR 103     BC: Primary of 12166+4058 FMR 103 found to be secondary of LDS4198;             
                       systems merged.                                                                 
12165+3304 CHR  37     A Delta Scuti-type variable and long-period (1300d) SB.                         
                       Hipparcos astrometric solution adopted some elements from the orbit of  HIP1997d
                       Griffin (1984).                                                         Grf1984a
                       A spectroscopic orbit with a period of 1300 days was determined by              
                       Christie (1936 ApJ, 83, 433). The many negative results listed here             
                       may be due to a large or variable magnitude difference.                         
12166+1200 BPM 589     [PM2000] 1027880 + [PM2000] 1027935.                                    Gvr2010 
12166-6312 SHY 595     HIP  59865 + HIP  59913.                                                        
12169+0258 LDS 935     LDS6259.                                                                        
12169-2228 LDS 399     NLTT 30204/30203                                                        Chm2004 
12171-6542 SHY 596     HIP  59898 + HIP  60183.                                                        
12176+3205 LDS1288     Also known as LDS6260.                                                          
                       NLTT 30242/30241                                                        Chm2004 
12176+1427 DEA  48     AB + TOK 399Aa,Ab: HIP 59933 has a variable RV according to GCS. The            
                       32mas separation corresponds to an orbital period of ~2yr. However,             
                       the separations in the y and I filters are somewhat discordant;                 
                       further confirmation is needed.                                         Tok2015c
12177-6410 JNN  79     The two targets 2MASS J12173945-6409418 and J12174012-6409389 are               
                       physically bound, as shown by common proper motion analysis. However,           
                       this means that one of the targets likely has an error in the Riaz et           
                       al. (2006) spectral type determination, since J12174012-6409389 is      Ria2006 
                       classified as M2 but is fainter than J12174012-6409389, which is                
                       classified as M3.5. The fact that J12174012-6409389 is fainter holds            
                       true both in 2MASS and in the AstraLux images. Both components are              
                       resolved as close binaries with AstraLux, so we consider it a strong            
                       candidate for a quadruple system, with J12173945-6409418A as the                
                       primary. Concerning which spectral type determination is incorrect, we          
                       consider that it is more likely that J12174012-6409389 is mis-                  
                       classified, as the flux ratio to the close companion is closer to               
                       unity than in the J12174012-6409389 case. We thus set the spectral              
                       type of J12174012-6409389A to M3+/-1, and determine the other spectral          
                       types on the basis of flux ratios. Component Bb is not visible in the           
                       i' data, but becomes visible in z' thanks to the higher Strehl ratio            
                       and intrinsic brightness of the component. A fifth object is visible            
                       in the field, but its color reveals it to be a likely background star.  Jnn2012 
12179+1627 LIM   4     Liu et al. (2012) derive near-IR spectral types of T9 +/- 0.5 and               
                       Y0 +/- 0.5. At a derived photometric distance of 10.5 +/- 1.7 pc, the           
                       two stars are separated by 8.0 +/- 1.3 au. Various evolutionary models          
                       yield masses of 11.5-14.4 Mjup for the primary, 5.5-8.3 Mjup for the            
                       secondary.                                                              LiM2012 
                       Based on resolved IR spectroscopy (0.9-2.5micron), Leggett et al.               
                       (2014) derive spectral types T8.5 and Y0-Y0.5 for this brown dwarf              
                       pair. Assuming an age range 4-8Gyr, they also estimate:                         
                           Teff   = 550-600          and 450K,                                         
                           mass   = 30+/-5           and 22+/-2 Mjup,                                  
                           radius = 0.091 +/- 0.004  and 0.096 +/- 0.003 Rsun,                         
                           log g  = 5.0 +/- 0.1      and 4.8 +/- 0.1                           Leg2014 
12179-5559 BYV   1     Bailey et al. (2014) derive spectral types F5V and L2.5, and estimate           
                       masses (1.5 +/- 0.10 Msun, 11 +/- 2 Mjup) and luminosities (log L/Lsun          
                       = 0.75 +/- 0.06 and -3.64 +/- 0.08). Distance to the system is 92 +/-           
                       6 pc, age is 13 +/- 2 Myr.                                              ByV2014 
12180-1456 RST3783     Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
                       Additional notes may be found in van den Bos (1963).                    B__1963b
12182+0515 HJ 2609     C is a nebula, HJ 1178.                                                         
12182-0357 STF1627     B is BD-03@3262.                                                                
                       H N  22.                                                                MEv2010 
12184-6400 HJ 4512     zet Cru                                                                         
12187+1148 STF1628     BDS 6116, HJ 1216 same star.                                                    
12189-2130 LDS 403     NLTT 30297/30298                                                        Chm2004 
12190+0555 GIC 105     G012-032/G012-031.                                                              
                       NLTT 30312/30313                                                        Chm2004 
12190+0005 GRV1075     SLW 709.                                                                        
12190-3318 HJ 4513     B is CD-32@8628.                                                                
12191+1036 BPM 590     [PM2000] 1028960 + [PM2000] 1028910.                                    Gvr2010 
12192-0319 TOK 283     Secondary appears to be a WD, mass estimated at 0.6 Msun.               Mug2014 
                       A is exoplanet host, P=48.05d.                                          Tok2014d
12195+2809 LEP  53     HJL1068.                                                                HJL1986 
                       B is SB1, RV=+17.97. RV(A)=-9.80.                                       Tok2014d
12196-4642 SWR 130     CPM pair                                                                Skf2004 
12199-0040 MCA  37     eta Vir = 15 Vir = Zaniah. A spectroscopic and occultation binary now           
                       resolved by speckle interferometry.                                             
                       Observed parallax corroborates closely the orbital value given by               
                       Hartkopf et al. (1992). Primary is 72d SB2 (#718 in Batten et al.,      Hrt1992a
                       1989). This is not the SB2 because the observed angular separations     Bte1989 
                       are much larger than the 12 mas maximum predicted by Halbwachs (1981)   HJL1981 
                       from the spectroscopic elements. See discussion in Balega et al.        Bag1984b
                       (1984), who give preliminary orbital elements based entirely on                 
                       speckle observations.                                                           
                       1985.2053, 1985.2491: These measures agree well with the preliminary            
                       orbit of Balega et al. (1984), who adopted a period of 13 years. The            
                       orbit proposed by Tokovinin (1984) with P = 9.8 years fails to fit the  Tok1984 
                       speckle observations.                                                   Bnu1986 
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
                       A new speckle/spectroscopic orbit of the early A type triple system             
                       eta Vir has been determined by Hartkopf et al. (1992).                  Hrt1992a
                       Martin et al. (1998) derive component masses 6.009 +/- 2.164 and                
                       0.673 +/- 0.800 Msun.                                                   Mig1998 
12201+1351 BU   27     A is variable.                                                                  
12201-6132 TOB 148     Also known as JAW  34.                                                          
12202+3754 STF1632     A is a spectroscopic binary.                                                    
                       HJL 169.                                                                HJL1986 
                       H N  52.                                                                MEv2010 
12203+2637 PIN   6     Primary is Melotte 111 AV 1113, a variable star.                                
12203+0319 BUP 141     16 Vir.                                                                         
12206-2213 BU 1245     zet Crv. HDO 132. A is a spectroscopic binary.                                  
12207+2703 STF1633     LDS1294.                                                                        
                       H N  31.                                                                MEv2010 
12207+1748 HO   52     11 Com.                                                                         
12208+2546 HJ  517     Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
12211+4927 FAR  36     Primary is white dwarf WD 1218+497.                                     Far2006 
12213-6217 EVS  18     Primary is the Cepheid T Cru.                                           Evs2016a
12214+1223 LDS1295     BC: LDS6261. Erroneously listed as AC pair.                                     
12215+3038 GIC 106     LDS1296. G148-047/G148-048.                                                     
                       NLTT 30450/30451                                                        Chm2004 
12215-2413 HWE  26     HDO 133                                                                         
12216-2716 B   227     Motion direct.                                                                  
12219+2833 LDS1300     LDS5214.                                                                        
12221-6731 HDO 215     zet 2 Mus                                                                       
12222+7315 TOK  26     Visual pair has estimated period 6800y.                                 Tok2006 
                       A is SB2, P=5.415d. AB not confirmed by RoboAO, but B is seen on J and          
                       K frames, seems to be real.                                             Tok2014d
12222+5805 WNC   4     Aka Messier 40. Definitively non-physical.                              Nug2002 
12222-3453 SWR 132     CPM pair                                                                Skf2004 
12223+3644 DEA  78     NLTT 30510 + 2MASS J12221837+3643485. Baron et al. (2015) estimate              
                       spectral types M3 +/- 1 and L0, distances 45 +47/-23 and 70 +/-10 pc,           
                       masses 0.377-0.431 and 0.074-0.081 Msun.                                BFr2015 
12225+2551 SHJ 143     12 Com. A is a spectroscopic binary. Spectrum composite: G0III-IV+A3V           
                       AC: H 5 121.                                                            MEv2010 
           SMR  57     Aka LAS   6. Lasgoity (2014) determines that the two components of the          
                       pair in the region of the Coma Berenice star cluster share common               
                       proper motion. He derives spectral types of F5V and K5V for the two             
                       components, and estimates distance, mass, and radius for both stars.            
                       The primary is the D component of 12225+2551ARN   6AD. These stars show         
                       very different proper motions than any of the components of 12225+2551,         
                       however, suggesting that ARN 6AD just an optical double linking the             
                       two systems.                                                            Las2014a
12225+0518 STF1636     17 Vir. B may be variable.                                                      
                       H 4  50.                                                                MEv2010 
12226-4920 SEE 153     Aka FAL  38.                                                                    
12228-0405 BWL  29     AC: Colors and/or astrometry are inconsistent with a late-type common           
                       proper motion companion based on visual inspection of the field from            
                       2MASS, SDSS, DSS1, and/or DSS2. Primary is G 13-33.                     Bwl2015 
12229+1725 GIC 107     LDS1301. G059-015AB.                                                            
12236-6138 EVS  19     Primary is the Cepheid R Cru.                                           Evs2016a
12240-6206 COO 137     Spectrum A0/2+K1/2III                                                           
12241+3827 KZA  30     RA cos(DEC) was in error by 1 arcmin in Kazeza measures.                KZA1984 
12242+6655 LDS2641     SLW 716.                                                                        
12242+0558 STT 248     FK Vir                                                                          
12244-5250 HJ 4520     B is CPD-52@5564.                                                               
12247+0225 AG  177     AB: HJL 170.                                                            HJL1986 
12248-2827 BRT2993     CPD-27@4502.                                                                    
12249-5807 BSO   8     Spectrum F8/G2IV/V+A.                                                           
12250-0414 TOK 400     HIP 60574 is a spectroscopic triple with periods 14d and 22yr (Latham           
                       2012, private communication), also an acceleration binary. We resolved          
                       the outer pair at 0".22 separation, matching the spectroscopic period.          
                       The lines of the visual secondary Ab could potentially be detected in           
                       the spectrum by cross-correlation, leading eventually to a full 3-D             
                       orbit.                                                                  Tok2015c
12251+6025 GIC 108     LDS1306.  G197-057/G197-058.                                                    
                       NLTT 30676/30680                                                        Chm2004 
12265+3858 LDS4208     NLTT 30746/30750                                                        Chm2004 
12266-6306 DUN 252     alp 1 Cru = Acrux. According to R.G. Aitken, this was discovered by     A__1935f
                       the Jesuit missionary, Father Fontenay, at the Cape of Good Hope, in    Fon1733 
                       1685, although the triple was first measured by Dunlop and called       Dun1829 
                       DUN 123AB and DUN 122AC. Spectroscopic binary. CPM with HR 4729 and             
                       HR 4731, so there are at least five components in the system.                   
                       Hyperbolic orbit by Hopmann (1960).                                     Hop1960b
                       q = periastron distance in the true orbit = 0".916                              
                       Both A and B appear to be spectroscopic binaries with undetermined      Bte1967 
                       periods (see Batten 1967).                                              Fin1970b
12268-0536 A    78     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 1.95 +/- 0.56, 2.88, and 1.25 Msun, respectively.             Mlk2012 
12269+2816 SMR  58     gam Com.                                                                        
12269-3728 HJ 4510     B is CD-36@7850. BC: C is CPD-36@5498.                                          
12270-0332 HJ  210     LDS2880.                                                                        
12272+2701 STF1643     A premature orbit has been computed. Omega and omega in Hopmann (1964)  Hop1964b
                       have been flipped in the orbit catalog to better match observations.            
                       Data appear equally well fit by rectilinear solution - see catalog.             
12272-1958 S   637     B is BD-19@3492.                                                                
12273-2026 I   513     PTT 23.                                                                         
12274+0723 STF1644     Optical pair with large relative motion, noted by Muller in his list            
                       of neglected pairs.                                                     Cou1953d
12274-2843 B   228     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 1.91 +/- 3.62, 2.73, and 1.51 Msun, respectively.             Mlk2012 
12275-7705 RST1668     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 1.26 +/- 0.25, 1.14, and 1.05 Msun, respectively.             Mlk2012 
12276+7525 LDS1751     NLTT 30801/30819                                                        Chm2004 
12278-1010 HDS1754     Primary is KP Vir, an Algol type eclipsing binary, P = 2.27720d.        Zas2012 
12279+3110 LDS1310     LDS5215.                                                                        
12281+4448 STF1645     Alternative spectra F5+K. (Mt. Wilson F8+G0). Statistically the same            
                       parallax within the errors would indicate the components are physical.          
12281-6002 HJ 4524     B is CPD-59@4236.                                                               
12283-6146 CPO  12     A,BC: A is SB, no orbit. AD can be physical. Moved by 1"in 40y (WDS),           
                       while the PM implied 6" motion.                                         Tok2014d
12284+1223 LDS1311     LIT  23. NLTT 30838/30837.                                              Chm2004 
12286+0433 TMA   1     Incorrectly identified as J  1022. Pairs are close, and have similar            
                       position angles (mod 180deg). However, the Jonckheere pair is closer,           
                       and all published measures indicated a small magnitude difference.              
                       This pair has been resolved by 2MASS, so added under that designation.          
12286+0431 J  1022     See note to TMA   1.                                                            
12287-7129 LDS 410     Proper motion -419 +1091.                                                       
12288-1040 RST3792     LDS4217. NLTT 30870 = Ross 948 = GJ 3727.                               Chm2004 
12289+2555 STFA 21     AB: A is an Alpha CVn-type variable, AI Com.                                    
                       B is a spectroscopic binary.                                                    
           BU 1080     BC: Faint companion was suspected sf on both nights.                    B__1963b
12290+4144 BWL  31     AC: Colors and/or astrometry are inconsistent with a late-type common           
                       proper motion companion based on visual inspection of the field from            
                       2MASS, SDSS, DSS1, and/or DSS2. Primary is GJ 3729.                     Bwl2015 
12290+0826 WSI 113     GJ 469. Initally added to WDS as 12297-0320AST   4 with GJ 469.1.               
12297-0320 TOK  27     GJ 469.1.  Visual pair has estimated period 3400y.                      Tok2006 
                       A is SB1, P=25.939d                                                     Tok2014d
12298-0527 B  2737     LDS5216.                                                                        
                       Also known as LHS2567/8. Parallax = 47.68 +/- 1.29 mas.                 Rdl2010 
12299-1631 SHJ 145     7 Crv = del Crv = Algorab. B is BD-15@3481.                                     
                       NLTT 30918/30916                                                        Chm2004 
                       A may be variable.                                                              
                       AB: H 4 105.                                                            MEv2010 
12300+5132 BUP 143     7 CVn = del CVn. C is BD+52@1630.                                               
12301-1324 BU   28     Wilson & Seabroke note seeing a distant (290".8) companion in 1874.26   WS_1877 
                       AB: Malkov et al. (2012) derive dynamical, photometric, and                     
                       spectroscopic masses 1.80 +/- 0.97, 1.81, and 1.07 Msun, respectively.  Mlk2012 
12302-5336 RSS  16     This previously uncataloged double star was a Hipparcos double entry            
                       system.  The first measure is determined from the individual positions          
                       listed by Rousseau et al.                                               Rss1996 
12303+2157 HJL1069     Spectral type of comoving secondary estimated F6-G4, mass 1.02 Msun.    Mug2014 
12306+0943 STF1647     Hopmann (1964) orbit rejected from Fourth Orbit Catalog                 Hop1964b
                       ("period over 4000 years")                                              Wor1983 
12307+5352 ES  726     AB: Also known as STI2284.                                                      
12309+2555 LAS   7     Lasgoity (2014) determines that the two components of the pair in the           
                       region of the Coma Berenice star cluster share common proper motion.            
                       He derives spectral types of M3V for both components, and estimates             
                       distance, mass, and radius for both stars.                              Las2014a
12310-5312 HJ 4526     B is CPD-52@5648.                                                               
           B  2738     CD: Additional notes may be found in van den Bos (1930).                B__1930b
12311+6116 LDS1314     NLTT 30989/30986                                                        Chm2004 
12312+0120 SHJ 146     STTA119. B is BD+02@2551.                                                       
12312-5707 DUN 124     gam Cru = Gacrux. A variable? B is CPD-56@5274, spectrum A3V.                   
                       AB: Optical pair, based on study of relative motion of the components           
                       using the method of apparent motion parameters.                         Kiy2008 
12313+5507 BAG  50     GJ 1160. Primary is the variable NO UMa.                                Bag2013 
                       Arenou (2000) gives combined solution of astrometric orbits and DSBs.   Are2000 
                       Paper includes masses and distances.                                            
                       Schlieder et al. (2016) derive the following properties for A and B:            
                          spectral types  K2V   +/- 0.5     K6.5V +/- 0.5                              
                          masses (Msun)   0.83  +/- 0.03    0.65  +/- 0.02                             
                          Teff (K)        5020  +/- 50      4150  +/- 30                               
                          log (L/Lsun)    -0.48 +/- 0.03    -0.96 +/- 0.03.                    SJE2016 
12316+1631 BPM 591     [PM2000] 1034110 + [PM2000] 1034136.                                    Gvr2010 
12316-1104 STF1649     B is BD-10@3486. Mt. Wilson spectral types A3, F2.                              
12317+1208 SHY 607     HIP  61135 + HIP  61416.                                                        
12321+7449 STF1654     H N 118.                                                                MEv2010 
12323+2000 HU  571     Possible quadrant reversal about 1920-1930.                                     
12323+1335 LDS1317     AC: NLTT 31039/31038                                                    Chm2004 
12324+1717 BPM 592     [PM2000] 1034422 + [PM2000] 1034445.                                    Gvr2010 
12324+1211 LDS 937     LDS1316.                                                                        
                       NLTT 31034/31037                                                        Chm2004 
12325+2106 STF1652     Primary is KK Com, a Beta Lyr type eclipsing binary, P = 1.06788d.      Zas2012 
12328+4828 LDS4227     NLTT 31062/31063                                                        Chm2004 
12329+5448 A  1600     Primary is II UMa, a W UMa type eclipsing binary, P = 0.82522d.         Zas2012 
12333-2410 ARA2180     May be HJ 4527 = BDS 6203 with a quadrant flip.                         Dam2015 
12334+3202 STF1653     STF1655.                                                                        
                       SEI 532.                                                                Nsn2017b
12335+0901 REU   1     Wolf 424 aka GJ 473 or LDS1320. One or both components may be a flare           
                       star.Proper motion -1777, +218.                                                 
                       Two possible orbit solutions by Schultz et al. (1998).                  Scz1998b
                       Masses of 0.143 +/- 0.011 and 0.131 +/- 0.10 Msun derived by Torres et  Trr1999 
                       al. (1999) assuming a trig parallax of 0.233 +/- 0.004 arcsec.                  
                       Heintz (1972) orbit utilizes elongations of blended photographic        Hei1972 
                       images.                                                                         
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
                       1990.04: Theta and rho values are averages of observations taken in             
                       the J, K, and L bands  (1250/380, 2200/480, and 3400/700 nm).                   
                       Magnitude difference is that at K band.                                 Prr1992 
12336+3837 STF1656     B is BD+39@2534.                                                                
12336+0717 TOK 149     HIP 61298. Not observed, but B at 18.7" is bright and likely physical,          
                       considering that N*=12.                                                 Tok2011a
12337+4121 BNU   4     A: bet CVn = 8 CVn = Chara. A spectroscopic binary and Beta CVn-type            
                       variable now probably resolved by speckle interferometry.                       
12340+3458 LDS1323     NLTT 31128/31127                                                        Chm2004 
12342-3206 HJ 4528     Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
12344+1517 OSO  46     G059-024. Neither is a common proper motion pair.                       Oso2004 
12345+1206 BPM 593     [PM2000] 1035249 + [PM2000] 1035290.                                    Gvr2010 
12346+3914 LDS4230     NLTT 31156/31154                                                        Chm2004 
12346-5752 R   202     TOB  92.                                                                        
12347+2549 LAS   8     Lasgoity (2014) determines that the two components of the pair in the           
                       region of the Coma Berenice star cluster share common proper motion.            
                       He derives spectral types of K4V and M0V for the two components, and            
                       estimates distance, mass, and radius for both stars.                    Las2014a
12349+2238 WRH  12     23 Com. A spectroscopic binary.                                                 
                       Additional notes may be found in Wilson (1941).                         WRH1941b
                       Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 8.26 +/- 4.61, 3.95, and 2.46 Msun, respectively.             Mlk2012 
12349-4538 ZUC   4AB   2MASS J12345629-4538075 is better known as TWA 16. The presence of a            
                       close companion to this star was noted in Zuckerman et al. (2001)               
                       which seems to be consistent with the companion that we detect.                 
                       However, since no explicit astrometric information is given in                  
                       Zuckerman et al. other than a rough estimation of the separation        Zuc2001b
                       (0.67"), it is not possible to test whether the companion shares a              
                       common proper motion with the primary at this point. The brightness             
                       and color are consistent with a physical companion, hence the system            
                       counts as binary in  the statistics.                                    Jnn2012 
12351+3104 LDS1325     NLTT 31191/31204                                                        Chm2004 
12351+2547 LAS   9     Lasgoity (2014) determines that the two components of the pair in the           
                       region of the Coma Berenice star cluster share common proper motion.            
                       He derives spectral types of K6V and K8V for the two components, and            
                       estimates distance, mass, and radius for both stars.                    Las2014a
12351+1823 STF1657     24 Com. B is a spectroscopic binary, spectrum A9Vm.                             
                       Measure of 1927.49 made by triangulation of multiple measures.                  
                       H 4  27.                                                                MEv2010 
12351+0727 STF1658     AC: Optical pair, based on study of relative motion of the components           
                       using the method of apparent motion parameters.                         Kiy2008 
12353+1318 LAW   1     Spectral types M5-M7 and M6-M7, masses 0.097-0.107 and 0.097-0.106              
                       Msun, distance 24.4 +/- 2.7 pc                                          Law2006 
                       The position angle for this system given in Law et al. (2006) is        Law2006 
                       actually 257.0deg, but since the components are fairly similar in               
                       brightness and there is a fake triplet effect, we assume that there             
                       can be a 180deg phase shift present in the Law et al. data (or                  
                       alternatively in both of our epochs). The angular motion in our two             
                       AstraLux images is 1.8deg in about 0.5 years. If taken at face value,           
                       the Law et al. data point would imply 198.4deg angular motion in 4.5            
                       years, corresponding to 22deg per half-year, which is an order of               
                       magnitude too large. On the other hand, if we subtract 180deg from the          
                       Law et al. position angle to get 77.0deg, then the angular motion is            
                       2.0deg per half-year, which is perfectly consistent with our                    
                       measurements. Hence, we adopt the latter value for our analysis.        Jnn2012 
12357-1650 FIN 368     Aa,Ab: Hipparcos parallax 13.56 +/- 0.76 mas. Dynamical parallax 13.3           
                       mas, masses 1.79 and 1.23 Msun.  Speckle measures of 1989-91 and        McA1990 
                       2009-11 repeat themselves, hinting at a 20 yr period. However, the      Tok2010 
                       measure by Mason et al. in 2006.2 does not fall on the same ellipse     Msn2009 
                       and had to be ignored. It could refer to another star, as FIN 368               
                       should have been unresolved at that time according to our preliminary           
                       orbit, which also matches the speckle non-resolution in 1976.3 and the          
                       non-resolutions in 1964-1966 by Finsen. An alternative orbit with P =   Fin1965a
                       10.13 yr and e = 0.9 can also be fitted to the data. The Hipparcos              
                       measure on 1991.25 contradicts speckle interferometry on 1991.39; it    HIP1997a
                       had to be ignored. Nordstrom et al. (1997) noted double lines           Nrd1997 
                       broadened by fast axial rotation of 100 km/s and 20 km/s. However,              
                       individual RVs measured by these authors during 1987-1991 (near the             
                       apastron) do not show any systematic behavior that could be related to          
                       the orbit. Continued speckle monitoring will be critical for                    
                       confirming the orbit.                                                           
12358-5935 WFC 128     TOB  97.                                                                        
12359-0125 BAL 872     RST4964.                                                                        
12360-3952 HJ 4533     AC: Optical pair, based on study of relative motion of the components           
                       using the method of apparent motion parameters.                         Kiy2008 
12362-4650 RST5526     Motion retrograde.                                                              
12366+3001 BFR   8     LSPM J1236+3000 + 2MASS J12363647+3000315. Baron et al. (2015)                  
                       estimate spectral types M6 +/- 1 and M9.0 +/- 1, distances 112 +6/-52           
                       and 126 +18/-44 pc, masses 0.102-0.133 and 0.079-0.085 Msun.            BFr2015 
12368+2014 AG  180     HDS1769.                                                                        
12369+8922 HJ 3170     Aka SKF 987.                                                                    
12371+1546 LDS1328     SLW 746.                                                                        
12372+2112 STF1663     STT 252.                                                                        
12372-6908 DON 541     alp Mus. Variable.                                                              
12373-1703 LDS 414     NLTT 31307/31301                                                        Chm2004 
12375-0334 TOK 150     HIP 61608. Not observed, the status of B at 5.5" is uncertain, could be         
                       physical (it is close and bright, N*=11).                               Tok2011a
12382+6628 LDS2656     Apparently a 1' error in RA for Luyten's secondary led to incorrect     Luy1972 
                       rho and theta for the 1966 measure.                                             
12383-5807 HJ 4534     TOB 105. B is CPD-57@5606.                                                      
12384-6255 COO 139     TOB 106.                                                                        
12386-0041 FAR  37     Primary is white dwarf WD 1236-004.                                     Far2006 
12387-0422 S   639     B is BD-03@3330.                                                                
                       AB: H 5 129.                                                            MEv2010 
12387-0520 STF1665     LDS 415. NLTT 31380/31381                                               Chm2004 
12388-5113 TOK 151     HIP 61698.                                                              Tok2011a
12390+1255 BPM 594     [PM2000] 1037092 + [PM2000] 1037097.                                    Gvr2010 
12391+2104 26 Com      Hipparcos astrometric solution adopted some elements from the orbit of  HIP1997d
                       Griffin (1981).                                                         Grf1981a
                       Ren & Fu (2013) calculated an astrometric orbit, combining Hipparcos    Ren2013 
                       Intermediate Astrometric Data with spectroscopic elements by                    
                       Griffin (1981).                                                         Grf1981a
12391-0133 HJ 1220     LDS2886.                                                                        
12391-5816 R   205     AB: TOB 108. B is CPD-57@5611.                                                  
12392+1420 STF1666     Spectrum of A composite; A3+G.                                                  
12392-0800 ENG  47     26 Vir = chi Vir. B is BD-07@3454.                                              
                       Spectrum of A: K2III-IIIbCN1.                                                   
12392-4022 B  1215     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 2.35 +/- 0.95, 2.18, and 0.98 Msun, respectively.             Mlk2012 
12394-5338 JNN  80     The two components of 2MASS J12392104-5337579 that were detected in             
                       the AstraLux images have almost equal brightnesses and color, hence             
                       they are very likely physically bound. Common proper motion has not             
                       yet been tested.                                                        Jnn2012 
12396+1956 BGH  40     AB: HJL1073.                                                            HJL1986 
12396-3717 DAW  63     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 1.33 +/- 0.78, 1.60, and 0.76 Msun, respectively.             Mlk2012 
12398+1754 BPM 595     [PM2000] 1037411 + [PM2000] 1037399.                                    Gvr2010 
12399+7425 HJ 2619     HJ 1221.                                                                        
12401+2049 OSO  47     G059-032. The AB pair is not a common proper motion pair, based on              
                       color, but the AC pair is. Astrometry for the wide pair is determined           
                       from Digital Sky Survey images                                          Oso2004 
12402-1150 LDS4241     NLTT 31463/31461                                                        Chm2004 
12406+1513 TDS8482     Aa,Ab: Initially added as 12405+1517 TDS8482, but was found to                  
                       comprise the primary of 12406+1513 HJ  213. Systems merged.                     
12408+7901 MLR 427     Also known as HDS1776.                                                          
12408+4031 LTT13601    Hipparcos astrometric solution assumed circular orbit (e = omega = 0)   HIP1997d
                       Spectroscopic solution to these astrometric pairs given by Griffin      Grf2013a
                       (2013). Periods match "tolerably well," other common elements less so.          
12409+2708 COU 596     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 3.92 +/- 1.30, 3.19, and 1.20 Msun, respectively.             Mlk2012 
12409+0850 STF1668     H N 143.                                                                MEv2010 
12412-0127 BU  607     HDO 134. This is the F component of STF1670.                                    
12413-1301 STF1669     58 Crv. Both A and B are spectroscopic binaries (A is SB1), with                
                       periods of 44.4 and 1.46d. Both may also be variable.                           
                       Period of AB estimated at 4500y, AC at 150,000y.                        Tok2006 
                       AB: H N  38.                                                            MEv2010 
                       The B component of STF1669 is the spectroscopic eclipsing binary VV             
                       Crv.  Fekel et al. (2013) derive an orbit based on light and velocity           
                       curves with P=3.1445d and e=0.0852. Both components are F5 dwarfs; V            
                       magnitudes are 6.099 and 7.536, and masses are 1.978 +/- 0.010 and              
                       1.513 +/- 0.008 Msun.                                                   Fek2013b
12415+2136 LDS4249     NLTT 31550/31551                                                        Chm2004 
12415-4858 HJ 4539     gam Cen. AB: Malkov et al. (2012) derive dynamical, photometric, and            
                       spectroscopic masses 7.30 +/- 3.94, 5.19, and 2.29 Msun, respectively.  Mlk2012 
           SHY 239     AD: HIP  61932 + HIP  61622. D component = tau Cen.                             
12416+4814 LDS4251     NLTT 31574/31576                                                        Chm2004 
12416+4105 LDS5757     LDS6262. NLTT 31567/31578                                               Chm2004 
12416+1026 H 6  81     H VI 81. 27 Vir. A is the Delta Scuti-type variable                             
                       GG Vir, and is also a spectroscopic binary.                                     
           SHY 610     AC: HIP  61937 + HIP  62350.                                                    
12417+5543 SHY  64     AB: HIP  61946 + HIP  61481.                                                    
                       AC: HIP  61946 + HIP  59496.                                                    
                       AD: HIP  61946 + HIP  65327.                                                    
           SHY 236     AE: HIP  61946 + HIP  61100.                                                    
                       BE: HIP  61481 + HIP  61100.                                                    
12417+2614 LDS1331     LDS6263.                                                                        
12417-0127 STF1670     gam Vir = 29 Vir = Porrima. According to R.G. Aitken, this was          A__1935f
                       discovered in 1718 by Bradley and Pound.                                        
                       One component is a suspected variable.                                          
                       Measure of 1720.31 made by triangulation of multiple measures.                  
                       Measure of 1927.31 made by triangulation of multiple measures.                  
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
                       AB: H 3  18.                                                            MEv2010 
                       AB: Additional notes may be found in van de Kamp (1929).                Kam1929 
                       AB: Malkov et al. (2012) derive dynamical, photometric, and                     
                       spectroscopic masses 2.69 +/- 0.06, 2.86, and 2.89 Msun, respectively.  Mlk2012 
                       AC: Additional notes may be found in Burnham (1894).                    Bu_1894 
                       AF: F component is primary of 12412-0127 BU  607. Pair not physical,            
                       so systems not merged.                                                          
12418+5645 BWL  33     AD: Colors and/or astrometry are inconsistent with a late-type common           
                       proper motion companion based on visual inspection of the field from            
                       2MASS, SDSS, DSS1, and/or DSS2.                                         Bwl2015 
12419+1014 VIG  15     Primary is rho Vir. The optical/physical nature of the faint companion          
                       is undefined.                                                           Vig2012 
12420+0648 BU  924     31 Vir.                                                                         
12420-2202 DON 547     CPD-21@5405.                                                                    
12420-4113 CPO 351     CPD-40@5868.                                                                    
12421-6924 EVS  20     Primary is the Cepheid R Mus.                                           Evs2016a
12422+2622 A  1851     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 1.62 +/- 0.38, 1.55, and 0.71 Msun, respectively.             Mlk2012 
12423+7510 LDS1755     ZUC  10. Primary is white dwarf PG 1240+754 = LB 261.                   Zuc1992 
                       NLTT 31644/31647                                                        Chm2004 
12423-6117 TDS8491     TOB 113.                                                                        
12423-6300 HDS1780     Primary is DP Cru, a W UMa type eclipsing binary, P = 1.88468d.         Zas2012 
12424-6258 TOB 112     DE: B component of 12422-6258 TOB 112 was found to be the D component           
                       of 12424-6258 SIN  74AD. Systems merged.                                        
12425+1311 LDS1333     NLTT 31615/31612                                                        Chm2004 
12427+3007 LDS1334     LDS6265.                                                                        
12428+4154 BWL  34     Colors and/or astrometry are inconsistent with a late-type common               
                       proper motion companion based on visual inspection of the field from            
                       2MASS, SDSS, DSS1, and/or DSS2. Primary is LHS 2613.                    Bwl2015 
12429+0516 A  1602     Derived orbital parallax 0".01295, mass sum 2.28 +/- 1.10 Msun          Lin2004a
12429-0215 LDS2888     AC: NLTT 31636/31638                                                    Chm2004 
12431+6109 LDS2320     Originally listed as 10442+6111, based on Luyten's 1950 coordinates,    Luy1970 
                       but no pair is found at that location. However, a pair in excellent             
                       agreement with his measure is found at the location of his cross-               
                       reference catalog entry, BD+61 1312.  Apparently there was a 2h error           
                       in Luyten's 1950 coordinates. Given the size of the error, correction           
                       to the WDS designation was deemed appropriate.                                  
12431+2117 LDS5758     LDS6266. G059-036. See Allen et al. (2000) for information on           AlC2000 
                       metallicity, age, galactic orbital parameters, etc.                             
12433+1734 BPM 596     [PM2000] 1038880 + [PM2000] 1038853.                                    Gvr2010 
12433-3341 I  1558     CPD-33@3294. Spectrum: G8IVCNIII.                                               
                       V1133 Cen, Algol (EA) type eclipsing binary, P = 1.270335 d.            Zas2011 
12436+6001 LAF  48     Heinze et al. (2010) determine the B component is a background object.  Hze2010 
12436-6116 TOB 115     Also known as JAW  35.                                                          
12438+0733 STF1674     Aka H N 143.                                                            Bu_1906 
12439+3421 GC 17317    Hipparcos astrometric solution assumed circular orbit (e = omega = 0)   HIP1997d
12440+0356 A  1603     B may be variable.                                                              
12441+3546 HO  256     Spectrum: A7/A8V/F2/3.                                                          
12442+5146 GC 17326    Hipparcos astrometric solution assumed circular orbit (e = omega = 0)   HIP1997d
12443-5553 R   206     B is CPD-55@5202.                                                               
12445+5841 LDS1335     NLTT 31745/31744                                                        Chm2004 
12445-0119 SKF  38     AB: Secondary is white dwarf PG 1241-010.                               Zuc1992 
12446-5717 FIN  65     AB: Malkov et al. (2012) derive dynamical, photometric, and                     
                       spectroscopic masses 2.38 +/- 0.80, 2.86, and 2.34 Msun, respectively.  Mlk2012 
                       AB: Docobo & Andrade (2013) derive a dynamical parallax of 7.51 +/-             
                       0.37 mas and component masses 2.20 +/- 0.42 and 1.69 +/- 0.33 Msun              
                       (for spectral type A0V) or 7.84 +/- 0.40 mas, 1.97 +/- 0.39 and 1.45            
                       +/- 0.29 Msun (for A0IV). See paper for extensive notes on system.      Doc2013d
12448+6203 STI 749     MLB 411 is identical                                                    Hei1983a
12449-5245 HJ 4546     B is CPD-52@5846.                                                               
12452-5721 SHY  65     HIP  62229 + HIP  69570                                                         
12453-0353 STF1677     B is BD-03@3348.                                                                
                       H 3  53.                                                                MEv2010 
12454+1422 STF1678     STTA120 = STFA 22.  B is BD+15@2503.                                            
                       Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
12456-6059 HJ 4547     iot Cru                                                                         
                       Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
12457-1734 FEN  17     ARA 227. An error in transcribing coordinates into the IDS from the             
                       original source resulted in an incorrect WDS designation of 21462-1634          
                       for this pair, as well as it's "rediscovery" by Aravamudan.             Ara1963 
12461+6320 LDS2658     NLTT 31833/31836                                                        Chm2004 
                       SLW 769.                                                                        
12463-6806 R   207     bet Mus. A has variable radial velocity.                                        
                       Rica (2012) derived a dynamical parallax of 11.3 mas (compared with     FMR2012g
                       10.48 +/- 0.65 mas from Hipparcos) and a mass sum (using the Hipparcos          
                       parallax) of 20.9 +/- 5.9 Msun.                                                 
12464+0932 STT 577     33 Vir. B is BD+10@2467.                                                        
                       Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
12464-5629 HJ 4548     B is CPD-55@5216 and is a suspected variable.                                   
12467-1901 B  2540     Elongation and quadrant doubtful.                                       B__1963b
12470-0748 GC 17364    Hipparcos astrometric solution assumed circular orbit (e = omega = 0)   HIP1997d
12470-5547 R   208     AB: TOB 122.                                                                    
12471+2237 SHY 612     HIP  62384 + HIP  62805.                                                        
12472+3325 LDS5217     LDS6267.                                                                        
12472+1442 GIC 109     G059-039/G061-017.                                                              
                       NLTT 31888/31890                                                        Chm2004 
12472+1157 BUP 145     34 Vir.                                                                         
12472-4105 WG  155     CPD-40@5908.                                                                    
12477-5941 I   362     bet Cru = Mimosa. A is a Beta CMa-type variable.                                
12478-0836 BRT 440     Aka SKF 226.                                                                    
12481+1325 BPM 597     [PM2000] 1040797 + [PM2000] 1040792.                                    Gvr2010 
                       NLTT 31941/31940                                                        Chm2004 
12483+7714 MLR 428     Also known as TDS8530.                                                          
12485+8134 LDS1758     B is BD+82@376.                                                                 
                       HJL 172.                                                                HJL1986 
12487+6019 SHY  66     AC: HIP  62512 + HIP  64532. C component = A component of 13136+5643.           
           SHY  66     AD: HIP  62512 + HIP  65327.                                                    
12489+1206 LEP  59     AE: M4, spectroscopic distance 24pc. 75" from G5 dwarf HD 111398 =              
                       HIP 62536 = 2MASS J12485242+1205469. Hipparcos pm for the G dwarf is            
                       +235-140, consistent with the USNO-B1 pm for M dwarf of +234-119.       Red2007a
                       E: 2MASS J12485345+1204326 is a wide (76") common proper motion                 
                       companion to HIP 62536 (Lepine & Bongiorno 2007), but is single in the  Lep2007 
                       AstraLux images.                                                        Jnn2012 
12491+4213 ES 2643     B is BD+43@2262.                                                                
12491-5125 RST5368     CPD-50@5488.                                                                    
12492+8325 STF1694     B is +84@289 and is a spectroscopic binary, spectrum A0V+A2V.                   
                       AB: H 4  15.                                                            MEv2010 
12492-0450 LDS5759     NLTT 31990/31992                                                        Chm2004 
12493+2733 CHR 179     30 Com. A is a spectroscopic binary, now probably resolved by speckle           
                       interferometry.                                                                 
                       Abt & Biggs (1972) note variable RV.                                    AbH1972 
12496+2053 LDS5760     LDS6269.                                                                        
12496+1035 BPM 598     [PM2000] 1041409 + [PM2000] 1041436.                                    Gvr2010 
12496+0349 STF1681     HJL 171.                                                                HJL1986 
12497+0111 ENG  50     B is BD+02@2584.                                                                
           OSO  48     G014-005. We do not confirm the ENG 50AB (V=9.6, 1.85', 340deg) pair            
                       using our data and images from the Digitized Sky Surveys                Oso2004 
                       OSO  48AC and AD are not companions to ENG  50. AC may go with                  
                       12511+0152BAL1887, but there is no corresponding D companion. The               
                       solution to this quandry is unknown.                                            
12500+4708 GIC 110     LDS5761. G123-064/G198-080.                                                     
                       NLTT 32044/32040                                                        Chm2004 
12501+5506 GJ 3753     GD 319. Infra-red excess indicates a red companion. Probst notes a      Prb1983 
                       private communication by Downes & Margon reporting a close companion,           
                       type dK, probably optical. McAlister et al. examined the relative               
                       proper motions and concurred that the pair is optical.                  McA1996b
                       Magnitude difference is based on images from 1988.1736 and 1993.2054.           
           FAR  14     AC: Primary is white dwarf WD 1247+553.                                 Far2005b
12501-4853 SWR 133     CPM pair                                                                Skf2004 
12505+4021 LDS4281     NLTT 32072/32078                                                        Chm2004 
12508+2926 LDS3063     LDS5218.                                                                        
12509+0757 LDS4282     LIT  25.                                                                        
12509-0428 LDS6270     NLTT 32082/32080                                                        Chm2004 
12512-4652 HJ 4552     B is CD-48@8210.                                                                
12514-1020 STF1682     B is BD-09@3568. One component variable?                                        
12515+2207 LDS 940     LDS4285.                                                                        
12516+2531 HJL1074     SHY 242. Bayesian analysis by Shaya & Olling (2011) indicates very      Shy2011 
                       high (near 100%) probability pair is physical.                                  
12517-3328 I  1561     Spectrum: Fm delta Del.                                                         
12518+0005 TOK 671     AB: Resolved with ANDICAM2. AB may be optical, but appear to be                 
                       co-moving.                                                              Tok2014d
12519+3447 HJ  523     HJL 174.                                                                HJL1986 
12519+1910 STF1685     AB: HJL 173.                                                            HJL1986 
                       AB: H 4  58.                                                            MEv2010 
12522+2247 GIC 111     LDS5219.  G059-042/G059-041.                                                    
                       NLTT 32153/32146                                                        Chm2004 
12522+1704 STFA 23     32 Com. B is BD+17@2553.                                                        
12525+3155 HJ  524     SEI 534.                                                                Nsn2017b
12527-5216 HDS1806     SWR 134. CPM pair                                                       Skf2004 
12528+3344 TOK 284     AC: The C component is the primary of 12534+3339 LDS1339. The LDS pair          
                       does not appear to be physical, so the systems were not merged.                 
12528+1225 TOK 401     HIP 62933 (41 Vir) was observed on request by F. Fekel who studies its          
                       spectroscopic orbit. Apparently it is resolved for the first time.      Tok2015c
12529+7741 LDS1761     NLTT 32240/32174                                                        Chm2004 
12531+1936 TOK 152     HIP 62860. A is a ROSAT X-ray source.                                   Tok2011a
12532-0333 CHR  38     38 Vir.                                                                         
12533+2115 STF1687     35 Com. The trend in the RV's of star A suggests that the ascending             
                       node is in the third quadrant.                                                  
                       AC: Star C (mag 9.75, 29", G3IV-V) is physical according to LeBeau,     LBu1990c
                       and in very slow direct motion.                                                 
                       AC: HJL 175.                                                            HJL1986 
                       AC: H 5 130.                                                            MEv2010 
12533+1310 HU  894     Divide the separation given in the IDS by 10. There is no change since          
                       discovery.                                                              Wor1967b
12533-1831 RST2821     HIP 62882. See Allen et al. (2000) for information on metallicity,      AlC2000 
                       age, galactic orbital parameters, etc.                                          
12534+1758 HJ  218     SLE 906.                                                                        
12536-0413 HR 4896     Ren & Fu (2013) calculated an astrometric orbit, combining Hipparcos    Ren2013 
                       Intermediate Astrometric Data with spectroscopic elements by                    
                       Griffin (1983).                                                         Grf1983 
                       SB1. Combined orbit including RV data and Hipparcos Intermediate                
                       Astrometric data. Semimajor axis derived from photocentric a0 plus              
                       stellar evolutionary model. Derived properties for A and B:                     
                       M/Msun = 1.62 + 0.39, L/Lsun = 26.66 + 0.02, dm = 7.81 mag,                     
                       log age = 9.33.                                                         WaX2015b
12537-2724 TOK 153     HIP 62925. B is physical, itself possibly a close binary as hinted by           
                       the residuals of the PSF fit. Small PM(A)=(-33,-40).                            
                       NOMAD: PM(B)=(+194,+500), V(B)=16.74 (??)                               Tok2011a
12539+7440 STF1698     WFC 131.                                                                        
12539-2918 STN  26     HDO 135                                                                         
12540+5558 BLM   2     eps UMa = 77 UMa = Alioth.                                                      
                       An Alpha CVn-type variable and eclipsing system.                                
                       1975.383: Erroneously listed as HD 112815 in Morgan et al. (1978)       BLM1978 
                       notes.                                                                          
                       The Yale Bright Star Catalogue cites this star as a spectroscopic       Hof1982 
                       variable with periods of 4.15 years and 0.95 days; the object is also           
                       a photometric variable with period 5.09 days. This observation                  
                       presumably resolved the longer period system.                           BLM1978 
12540-1802 S   643     B is BD-17@3725.                                                                
12541+5500 LDS3067     SLW 792.                                                                        
12542+5250 BEM   2     Position corrected by Heintz.                                           Hei1983a
12543-1139 CHR 206     First detected as an occultation binary by Africano.                    Afr1975 
12544-5826 EVS  21     Primary is the Cepheid S Cru.                                           Evs2016a
12546-5711 DUN 126     A: mu 1 Cru                                                                     
                       B: mu 2 Cru. B is variable, spectrum B5Vne.                                     
                       Statistically the same parallax within the errors would indicate the            
                       components are physical.                                                        
12547+2206 MET   9     Metchev & Hillenbrand say the pair is probably physical, based on               
                       proximity.                                                              Met2004b
12550+5810 STF1691     AB: HJL 176.                                                            HJL1986 
12550-8507 RST2819     iot Oct                                                                         
12553+0750 NLTT 32291  Ren & Fu (2013) calculated an astrometric orbit, combining Hipparcos            
                       Intermediate Astrometric Data with spectroscopic elements by                    
                       Latham et al. (2002). They derived component masses 0.81 and 0.41 Msun  Lat2002 
                       and an estimated semimajor axis of 37.96 mas.                           Ren2013 
12554+6953 A  1092     Malkov et al. (2012) derive dynamical, photometric, and spectroscopic           
                       masses of 1.49 +/- 0.47, 1.92, and 0.95 Msun, respectively.             Mlk2012 
12556+0324 BUP 146     del Vir = 43 Vir. Smyth's quoted separation is difference in RA only.   Smy1844 
12557+0620 LDS4295     SLW 796.                                                                        
12559+1653 BPM 599     [PM2000] 1044021 + [PM2000] 1044047.                                    Gvr2010 
12559+0812 HJ  850     LDS 941.                                                                        
12560+3819 STF1692     alp CVn = Cor Caroli. Both components are spectroscopic binaries.               
                       Prototype of the Alpha CVn-type variables. Spectrum F0V.                        
                       NLTT 32338/32336                                                        Chm2004 
                       H 4  17.                                                                MEv2010 
12560-1257 SJM   1     Aa,Ab: Stone et al. (2016) resolve the primary of the late M dwarf              
                       VHS J125601.92-125723.9, whose 8" companion was found to be an L-type           
                       brown dwarf. (Gauza et al. 2015). Spectrophotometric distance           Gza2015 
                       estimates implied by the M7.5 spectral type of the primary yield a              
                       distance of 17.1 +/- 2.5 pc. Kinematics are consistent with membership          
                       in the AB Dor moving group. For an age ~300 Myr, the masses of these            
                       two near-equal magnitude M7.5 stars are each 64.6 +0.8/-0.2 Mjup, and           
                       the mass of the distant companion is 11.2 +9.7/-1.8 Msun.               SJM2016 
12560-5650 HDO 221     Classification of the B component is from Lindroos (1985), who finds a  Lnd1985 
                       distance of 2.5 kpc.                                                    Msn1998a
12562+0050 SKF 896     Also known as BAL1453.                                                          
12563+5406 STF1695     A spectroscopic binary, P = 5.13d.                                              
12563+3232 HIP  63144  Ren & Fu (2013) calculated an astrometric orbit, combining Hipparcos    Ren2013 
                       Intermediate Astrometric Data with spectroscopic elements by                    
                       Griffin (2004).                                                         Grf2004 
12563-0452 STF1690     H 2  42.                                                                MEv2010 
                       Discordant 3rd exposure gives 148.9deg, 6.9".                           Brt1931 
12564-3007 HJ 4558     B is CD-29@10020.                                                               
12567+0701 STF1693     HJL 177.                                                                HJL1986 
12567-4741 I    83     1995.1028: Quadrant determined by speckle imaging analysis.             Hor1996 
12571+2330 LDS 942     2MASS J12565215+2329501 and J12565272+2329506 constitute a known 8"     Red2007a
                       binary pair in the Reid et al. (2007) sample.                           Jnn2012 
12575+1842 BGH   5     LDS 943. HIP 63239. See Allen et al. (2000) for information on          AlC2000 
                       metallicity, age, galactic orbital parameters, etc.                             
                       NLTT 32427/32423                                                        Chm2004 
                       HJL 178.                                                                HJL1986 
12576+3514 LDS5764     LDS6271. Spectra dM1.5e and dM3.5e. Starspots exist on A, and it is             
                       also a flare star.                                                              
                       NLTT 32441/32438                                                        Chm2004 
12577+4628 LDS4301     NLTT 32443/32444                                                        Chm2004 
12577-2249 LDS4300     1deg error in IDS led to similar error in WDS designation.                      
12578+3038 LDS1348     NLTT 32449/32447                                                        Chm2004 
12579+4948 HU  641     Apparent rapid motion. A premature orbit has been calculated.                   
12582+4153 LDS5766     NLTT 32463/32464                                                        Chm2004 
12584+5822 HJ 2628     B is BD+59@1476.                                                                
12585+3817 STF1702     B is BD+39@2587.                                                                
                       HJL 179.                                                                HJL1986 
12585-4618 DON 568     CPD-45@6129.                                                                    
12586+4013 RDN   2     2MASS J12583501+4013083 + 2MASS J12583798+4014017. Separation ~6700au,          
                       apparently widest very low mass binary found to date. Found in cross-           
                       match of SDSS and 2MASS catalogs. Distance 105 +/- 13 pc, masses (from          
                       evolutionary models) 0.105 +0.029/-0.017 and 0.091 +0.010/-0.007 Msun.  Rdn2009 
12590-0950 B  2541     HIP 63366. See Allen et al. (2000) for information on metallicity,      AlC2000 
                       age, galactic orbital parameters, etc.                                          
12595+4159 LTT13738    Hipparcos astrometric solution assumed circular orbit (e = omega = 0)   HIP1997d
12595+2814 WSI   1     Hipparcos suspected non-single.                                                 
12595-4832 HJ 4562     B is CD-47@8001.                                                                
                       SWR 136. CPM pair                                                       Skf2004 
12597+1002 BFR   9     LSPM J1259+1001 + 2MASS J12594167+1001380. Baron et al. (2015)                  
                       estimate spectral types M5 +/- 1 and L4.5 +/- 0.5, distances                    
                       42 +44/-21 and 47 +5/-18 pc, masses 0.121-0.167 and 0.057-0.074 Msun.   BFr2015 
12597-0349 CHR  39     Aa,Ab. 44 Vir. Rapid binary.                                                    
                       1991.3921: This interferometric system has now completed nearly 180deg          
                       of revolution since its discovery in 1984.  A preliminary                       
                       determination of orbital elements yields a low-eccentricity orbit with          
                       a period of 15.7 years. Absolute quadrant determinations based on               
                       reanalysis of earlier speckle data have ruled out a possible short-             
                       period high-eccentricity orbit. A more complete orbital analysis is in          
                       progress.                                                                       
                       Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and                  
                       spectroscopic masses 3.41 +/- 0.75, 3.58, and 2.00 Msun, respectively.  Mlk2012 
           STF1704     AB: H 4  51.                                                            MEv2010 
12598+0431 LDS4304     Primary is white dwarf WD 1257+047 = GD 267.                            Far2005b
12598-5555 DUN 127     B is CPD-55@5317.