23003+6755 GIC 187     G241-034/G241-035.                                                              
23004+0353 J  1797     BAL 2575.                                                                       
23009+3522 HU  991     P = 180y, a = 0.65", motion direct.                                             
23009-2216 BU  179     CD-22@16154.                                                                    
23016+6912 OL  224     Also known as MLB 435.                                                          
23018-0351 GC 32089    Hipparcos astrometric solution assumes circular orbit (e = omega = 0).  HIP1997d
23019+4220 BLA  12     Aa,Ab: Omicron And. Spectrum composite: B6IIIpe+A2p.                            
                       There appear to be both short and long period light variations.                 
           WRH  37     AB: P = 68.6y, a = 0.277", motion retrograde. B has been reported               
                       to be a double-lined spectroscopic binary, P = 33.01d.                          
                       Orbital elements by Olevic & Cvetkovic (2006) for SB:                   Ole2006a
                       P = 33.01 +/- 0.02 d, Tper = 2446925.3 +/- 0.2, e = 0.24 +/- 0.01,              
                       omega = 226.2 +/- 2.3deg, a sin i = 0.161 +/- 0.003 and                         
                       0.211 +/- 0.002 AU, M sin3i  = 3.74 +/- 0.05 and 2.86 +/- 0.05 Msun.            
                       This component was first reported in McAlister & Hendry (1982) for      McA1982b
                       1976.61, after which earlier French data were reprocessed to yield the          
                       1975 measures.                                                                  
23020+4800 A   194     P = 139y, a = 0.26", motion retrograde.                                         
23020-2151 B  1018     HDO 174                                                                         
23021+1026 J   294     J 1731.                                                                         
23023-6418 DUN 244     B is CPD-64@4310.                                                               
23024+1837 HU  398     P = 130y, a = 0.33", motion direct.                                             
23026+4245 BU 1147     2 And. P = 77y, a = 0.28", motion direct.                                       
                       The RV of the primary is probably variable.                                     
                       The physical nature of star C (mag. about 13, 90") unknown.                     
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
                       The equinox-1900 position was incorrectly given as 22590+4213 in                
                       McAlister & Hendry (1982).                                              McA1982b
23028+5718 HJ 1843     STI 2929.                                                                       
23028+4404 STF2973     A variable, LN And.                                                             
23034+6027 STT 486     A is a spectroscopic binary. B is BD+59@2630.                                   
23035-3445 pi PsA      Hipparcos astrometric solution adopted some elements from the orbit of  HIP1997d
                       Bopp et al. (1970).                                                     Evn1970 
23036-5618 HJ 5379     B is CPD-56@9990.                                                               
23038+2805 HJ 1842     Beta Peg. A is an irregular variable, spectrum M2.5II-III.                      
                       AB is optical.                                                                  
                       AB and AC: Optical pairs, based on study of relative motion of the              
                       components using the method of apparent motion parameters.              Kiy2008 
23039+0056 J  1798     BAL 1247.                                                                       
23040-0233 OSO 188     G028-031. Not a common proper motion pair, based on color and                   
                       comparison with POSS2 red plates.                                       Oso2004 
23046-2611 B   587     Measures uncertain, too close. Needs speckle.                                   
23047+2355 POU5775     J 1898.                                                                         
23049+1539 WRH   2     BRT 1363 is probably identical.                                         Hei1983a
23051+5118 HJ 1846     Secondary is about 0.09 mag brighter than primary                       Los2005 
23052-0742 A   417     83 Aqr. P = 21.84y, a = 0.203", motion direct.                                  
                       Alternative spectral type: F2IV+F0V.                                            
                       1977.9134: Rho was incorrectly given as 0".211                          McA1982b
23054+5453 HJ 3172     STI 2934.                                                                       
23054-0911 LDS2965     NLTT 55790/55791                                                        Chm2004 
23064+1235 GIC 188     AB = G029-001/G067-047.                                                         
                       AB: NLTT 55834/55835                                                    Chm2004 
23064-2152 HJ 3166     CD-22@16189.                                                                    
23065+4655 STTA242     B is BD+46@3933.                                                                
23067+3302 STF2975     Statistically the same parallax within the errors would indicate the            
                       components are physical.                                                        
23067-0412 HJ  978     Also known as CHE 435.                                                          
23069-4331 JC   20     Theta Gru. Spectrum F5m delta Del.                                              
23071-2310 LDS5047     NLTT 55857/55860                                                        Chm2004 
23072-5041 DUN 246     B is CD-51@13470.                                                               
23077+4623 HJ 1849     4 And.                                                                          
23078+6338 HU  994     P = 88.3y, a = 0.36", motion direct.                                            
23078-2042 HJ 3169     Durchmusterung identification not certain.                                      
23079+7523 STT 489     Pi Cep. P = 160y, a = 0.84", motion direct. Visual primary (G2 III) is          
                       557d SB1 (#1425 in Batten et al., 1989). A spectroscopic orbit was      Bte1989 
                       published by Scarfe et al. (1983).                                      Scf1983 
           pi Cep      Astrometric orbit by Gatewood et al. (2001) found by combining          Gat2001b
                       Hipparcos and Multichannel Astrometric Photometer data with the                 
                       spectroscopic elements of Scarfe et al. (1983). The photographic        Scf1983 
                       semimajor axis estimated at 39.0 +/- 3.9 mas. Masses are determined             
                       for all three components of this triple.                                        
                       This object was misidentified as HR 8815 by McAlister (1978).           McA1978c
23079-5938 NZO 104     Spectral type G0?                                                               
23080+4151 OSO 189     G190-010. Not a common proper motion pair, based on comparison with             
                       POSS2 red plates.                                                       Oso2004 
23083+0439 GIC 189     G029-006/G029-007.                                                              
23087+0208 5 Psc       Hipparcos astrometric solution assumes circular orbit (e = omega = 0).  HIP1997d
23088+1058 A  1238     P = 72y, a = 0.26", motion retrograde.                                          
23093+4939 HDS3296     1996.5352: Very weak detection, possibly an artifact.                   Msn1999b
23093-8224 HJ 5378     B is CPD-83@745.                                                                
23094+0701 OSO 190     G028-042. Not a common proper motion pair, based on comparison with             
                       POSS2 red plates.                                                       Oso2004 
23095+0841 STF2982     57 Peg. A is an irregular variable, GZ Peg. Spectrum composite;                 
                       M4IIIs+A2V.                                                                     
23096+0045 GAU  20     ZoSe 13964-13965. Proper motion -210 -1270.                                     
                       We do not confirm it using our data and images from the Digitized Sky           
                       Surveys                                                                 Oso2004 
23097+5920 KUI 115     2 Cas.                                                                          
23099-2057 LDS5052     NLTT 55994/55997                                                        Chm2004 
23099-2227 RST3320     89 Aqr.                                                                         
23100+4758 STF2985     B is BD+47@4058.  B is also a BY Dra-type variable and a 3.0d SB2 =             
                       KZ And; AB has a period of ~6300y.                                      Tok2006 
23100+3651 S   825     B is BD+36@5011.                                                                
23100+1426 STF2986     LDS1066.                                                                        
23104+4901 STF2987     NLTT 56040/56041                                                        Chm2004 
23104-4515 iot Gru     Hipparcos astrometric solution adopted some elements from the orbit of  HIP1997d
                       Jones (1928).                                                           Jon1928e
23106-0550 LDS2970     NLTT 56037/56038                                                        Chm2004 
23110+6555 AG  290     B is BD+65@1855.                                                                
23111+5304 HD 218915   Aslanov et al. (1984 SvAL 10, 278) discuss the radial velocities and            
                       the possibility of a low-mass companion.  We found a possible binary            
                       companion at a separation of 0".08 which needs confirmation.            Msn1998a
23114+3924 MLB1102     ALI 1003.                                                                       
23114+3813 HO  197     AB: P = 380y, a = 0.48", motion retrograde.                                     
                       Star C (BD +37 4784, mag. 9, 40") may be physical                               
                       Star D (+37 4783, 50") is optical.                                              
23114-4259 B   594     A premature orbit has been calculated. Needs speckle.                           
23116+3654 RUC  26     Multiple system including contact binary AB And. Pribulla & Rucinski            
                       (2006) estimate the mass of the contact pair at 1.656 Msun and the      Pbl2006 
                       minimum mass of the wider component at 0.40 Msun.                               
23118+2651 BUP 234     60 Peg.                                                                         
23121+4517 BU 1528     See star at 23108+4531. Burnham thinks this star more likely to be      Bu_1913 
                       HJ 1853.                                                                        
23126+0241 A  2298     P = 29y, a = 0.21", motion retrograde.                                          
                       Pourbaix gives combined solution for this resolved SB2, yielding        Pbx2000b
                       orbital parallaxes and component masses.                                        
23129+1233 HJ 3176     BDS 12223, HJ 3177 same star.                                                   
23131+4000 STF2992     Same as STF2994.                                                                
23133+5710 STT 599     A is variable. Proper motion +2075 +296. AB optical.                            
                       B is BD+56@2967. Proper motion of B +009 +006.                                  
                       Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
23134+0241 SCA 144     AB: Eclipsing binary of Algol type, SZ Psc.                                     
           TOK  37     AC has estimated period 50,000y; Evolved primary is 4d eclipsing SB2.           
                       G-solution in Hipparcos. The K1III subgiant primary likely transfers            
                       mass to the MS secondary. Kalimeris et al. (A&A 293, 371, 1995) find            
                       period changes, apparently explained by the mass transfer and magnetic          
                       fields. Any potential tertiary period should be longer than 56y.        Tok2006 
23137+0212 STT 491     ADS notes that the A component (= STT 491 rej) was excluded as single   A__1932a
                       in the 2nd edition of the Pulkova Catalog.                              Stt1878 
23141-0855 STF2993     LDS 802.                                                                        
                       AB: NLTT 56207/56208                                                    Chm2004 
                       B component is 7.1d SB1; period of AB estimated at 18,000y.             Tok2006 
           S   826     AC and BC: Optical pairs, based on study of relative motion of the              
                       components using the method of apparent motion parameters.              Kiy2008 
23142-1938 LDS5060     NLTT 56210/56211                                                        Chm2004 
23146+2555 COU 335     TDT3949.                                                                        
23150-6334 LDS 803     Spectral type K0?                                                               
23151+8327 STF3003     B is BD+82@712.                                                                 
23152+6027 DOO  21     STI 1158. The fainter component is a Wolf-Rayet star.                           
23156+5829 MLR 365     May be identical to J 860.                                                      
23157+0118 CHR 141     Suspected occultation binary.                                                   
23157-1221 LDS2977     NLTT 56270/56279                                                        Chm2004 
23159-0905 STFB 12     Psi (1) Aqr. LDS 805.                                                           
                       A-BC: NLTT 56282/56278                                                  Chm2004 
           BU 1220     AD: Optical pair, based on study of relative motion of the components           
                       using the method of apparent motion parameters.                         Kiy2008 
                       BC: A pair in motion in a high-inclination orbit.                               
23160-3309 B   596     Spectrum: Fm delta DEL.                                                         
23161+4801 ES  694     ES 1186.                                                                        
23162-2823 LDS5062     NLTT 56294/56292                                                        Chm2004 
23164+6407 BU  992     A premature orbit has been computed.                                            
23164+3739 ES 2537     J 3189.                                                                         
23165+6158 HDS3314     1991.9043: This observation confirms the Hipparcos solution at a                
                       similar epoch (1991.25). An elongated secondary peak yielded an                 
                       inaccurate value for rho, however.                                      Msn1999b
23166-0135 STF2995     LDS 808.                                                                        
23167-3635 HDS3317     A single star reported double due to a grid-step error according to             
                       Fabricius.                                                              Fab2000b
23171+3144 OSO 191     G128-043. None is a common proper motion pair, based on comparison              
                       with POSS2 red plates.                                                  Oso2004 
23171-1349 BU  182     Two orbit solutions by Heintz (1991); P = 105 or 260y, a = 0.40 or      Hei1991 
                       0.80", inclination 90 deg; shorter-period solution appears preferable.          
                       appears preferable.                                                             
                       Van Biesbroeck (1961) reports a companion with cpm (mag. 17, 15").      VBs1961 
           LDS6393     G273-001. AB component not resolved in our data                         Oso2004 
                       HIP 114962. See Allen et al. (2000) for information on metallicity,     AlC2000 
                       age, galactic orbital parameters, etc.                                          
23173-6655 LDS 807     B is CPD-67@3959.                                                               
                       HIP 114980. See Allen et al. (2000) for information on metallicity,     AlC2000 
                       age, galactic orbital parameters, etc.                                          
23176+1818 HU  400     P = 172y, a = 0.38", motion retrograde.                                         
23176-0131 BU   79     P = 388y, a = 1.99", motion retrograde.                                         
                       HIP 115012. See Allen et al. (2000) for information on metallicity,     AlC2000 
                       age, galactic orbital parameters, etc.                                          
23177+4901 BU  717     8 And.                                                                          
23179-1112 LTT 9469    Hipparcos astrometric solution assuming circular orbit (e = omega = 0). HIP1997d
23180+4006 MLB 505     ALI1185.                                                                        
23180+3132 OSO 192     G128-045. Not a common proper motion pair, based on comparison with             
                       POSS2 red plates.                                                       Oso2004 
23180+0904 OSO 193     G029-020. Not a common proper motion pair, based on color and                   
                       comparison with POSS2 red plates.                                       Oso2004 
23180-6100 DUN 247     B is CPD-61@6734. B spectral type A5/7V.                                        
                       Statistically the same parallax within the errors would indicate the            
                       components are physical.                                                        
23181+6017 STI1165     B is called BD+59@2698 by Bacchus.                                              
23181-0721 LDS2978     LDS6023.                                                                        
23185-0916 LDS 810     NLTT 56435/56436                                                        Chm2004 
23186+6807 STF3001     Omicron Cep. A premature orbit has been computed.                               
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
                       System mass 3.65 +-0.60 Msun. G8III spectral type of primary                    
                       confirmed.                                                              Doc2003d
23186-5818 HJ 5392     B is CPD-58@8063.                                                               
                       Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
23189+0524 BU   80     P = 97y, a = 0.74", motion direct.                                              
                       Lewis and Leavenworth measures attributed to CE actually were of a new  L__1902a
                       pair, designated CF.                                                    Lv_1930 
                       AB: The Heintz (1996) orbit predicts a separation of 0.374"; however,   Hei1996c
                       the secondary may have been too faint for the CHARA camera.             Hrt2009 
                       AE: Optical pair, based on study of relative motion of the components           
                       using the method of apparent motion parameters.                         Kiy2008 
23190-0937 HO  199     Psi (3) Aqr.                                                                    
23191+4855 ES 2725     B is BD+48@3994.                                                                
23191-1328 MCA  74     94 Aqr. A is a long-period spectroscopic binary now resolved by                 
                       speckle interferometry.                                                         
                       Soderhjelm give triple solution with B (HIP 115125) instead of poor     Sod1999 
                       Hipparcos solution. The primary is overmassive, probably sp. bin.,              
                       cf. analysis of the spectroscopic/interferometric orbit by McAlister            
                       & Hendry (1982)                                                         McA1982c
                       Analysis of this observation by the techniques in use in 1985 was               
                       unable to yield a useable result.                                       Hrt1992b
                       1977.6350: This epoch was incorrectly given as 1977.6359.               McA1982b
23193+4343 SMA 188     J 2381.                                                                         
23194+7900 LDS2035     AB: Also known as MLR 271.                                                      
23194-0507 HJ 5394     96 Aqr. A is a spectroscopic binary.                                            
                       NLTT 56477/56476                                                        Chm2004 
23196+0322 SCA 152     We do not confirm it using our data and images from the Digitized Sky           
                       Surveys                                                                 Oso2004 
23197+4823 STTA244     B is BD+47@4111.                                                                
23199+2844 COU 439     P = 60y, a = 0.18", motion direct.                                              
23204+5542 STI2969     This star may be at 23 18.4 +55 42.                                             
23205+3037 GIC 190     G128-049/G128-050. The A component is Ross 243.                                 
                       NLTT 56545/56551                                                        Chm2004 
23205+1259 LDS5070     NLTT 56546/56548                                                        Chm2004 
23208-5018 RST5560     Spectrum F5m Delta Del.                                                         
23209+3811 ENG  86     12 And.                                                                         
23210-0148 DAE   7     NLTT 56566 LP 642-48                                                            
                       Daemgen et al. (2007) derive a distance of 22.6 +/- 6.7 pc, separation  Dae2007 
                       of 2.2 +/- 0.7 AU, and predicted orbital period of 6 +/- 3 yr.                  
                       Spectral types for both stars are M4.0 +/- 0.5; masses are                      
                       0.25 +0.18/-0.11 and 0.21 +0.17/-0.09 Msun.                                     
23212+6737 OSO 194     G241-052. Not a common proper motion pair, based on comparison with             
                       POSS2 red plates.                                                       Oso2004 
23215+3730 ES 2540     J 2407, ALI 469.                                                                
23218-1217 HU   95     P = 173y, a = 0.47", motion retrograde.                                         
                       Combined magnitude from HD. Some visual observers report the pair               
                       to be brighter.                                                                 
23219+3149 BU  718     64 Peg. A is a spectroscopic binary, perhaps as a consequence of                
                       motion in the visual pair.                                                      
23224-4636 CPO 637     LDS 812.                                                                        
23227-1502 HU  295     97 Aqr. P = 63.2y, a = 0.42", motion direct.                                    
23228+2208 GIC 191     G068-012/G068-007.                                                              
23228+2034 STF3007     AB: NLTT 56671/56672                                                    Chm2004 
                       AC: Optical pair, based on study of relative motion of the components           
                       using the method of apparent motion parameters.                         Kiy2008 
23231+1219 HO  300     Removed from WDS as probably not real.                                          
23235+4548 STF3010     AB: NLTT 56707/56708                                                    Chm2004 
23237-1430 HJ 5397     B is BD-15@6411.                                                                
23238-0828 STF3008     An optical pair. A pair was measured by Harvard Observatory near        Pei1882 
                       ADS 16725: 1867.92, 194.4@, 34.09".                                             
23239-5349 DUN 249     B is CPD-54@10280.                                                              
23241-2146 I  1058     Reality of companion doubtful.                                                  
23248+6217 H 6  24     AB: H VI 24.                                                                    
23249+6137 STI1176     According to ADS, Stein also notes a close component (1905.79,          A__1932a
                       91.9deg, 1".2, magnitudes 10.5, 11.3)                                           
23249+4149 CHE 454     AC: A 10' error (23249+4139) in copying declination to catalog led              
                       to assigning a different designation to this companion of CHE 453.              
23256+3326 AG  292     BDS: 11713, AG 282.                                                             
23263+3311 OSO 195     Known companion (= 23263+3311LDS1067)                                   AlC2000 
                       at 4.33'                                                                Oso2004 
           LDS1067     G128-064. See Allen et al. (2000) for information on metallicity,       AlC2000 
                       age, galactic orbital parameters, etc.                                          
                       AB: NLTT 56856/56847                                                    Chm2004 
23265+6038 OSO 196     G217-008. None is a common proper motion pair, based on comparison              
                       with POSS2 red plates.                                                  Oso2004 
23266+5709 LEO  31     STI 2980.                                                                       
23266+4520 GIC 192     The pair HJ 1867 were improperly precessed before, so observers may             
                       have been looking in the wrong patch of sky. Component A of this                
                       optical triple has a very high proper motion. The proper motion of              
                       component B is quite small. The proper motion of component C is                 
                       unknown. At some point during the 20th century, the B and C components          
                       were in approximately the same position, which probably contributed to          
                       the lack of early epoch AC measures. It is possible that some of the            
                       early AB measures may have actually been measures of A-BC. A detailed           
                       analysis of this system is in Bur2003. AB = G216-044/G216-043.                  
                       AB: Optical pair, based on study of relative motion of the components           
                       using the method of apparent motion parameters.                         Kiy2008 
                       AC: NLTT 56881/56879                                                    Chm2004 
23269+0115 S   830     Kappa Psc. An optical pair. Spectrum A0pCrSi:Sr:.                               
23272-5017 DUN 250     B is CD-50@13978.                                                               
23274+6027 SMA 198     A is an irregular variable.                                                     
23274+5016 OSO 197     G216-045. AF comprise the only common proper motion pair in this                
                       multiple system                                                         Oso2004 
23283+0604 H 5  48     H V 48. B is BD+05@5174.                                                        
23287+1157 A  1239     CHE, ADS 16834 is identical to A 1239 with a mistake in position.               
23294+4128 GIC 193     G190-028/G190-027 =  GJ 4337A+4338B                                             
23299-5213 BRT2104     CD-52@10438.                                                                    
23300+5833 STT 496     AB: BDS 12349. H VI 25 same star. A is the Algol-type system AR Cas.            
23300-5419 HJ 5401     B is CPD-55@10034.                                                              
23301+3557 J  3197     ALI 238.                                                                        
23304+3050 BU 1266     P = 48.8y, a = 0.20", motion retrograde. Triple-lined; both visual              
                       components are double-lined spectroscopic binaries, P = 1.92 and                
                       13.04d resp. Suspected light variation of the system is unconfirmed.            
                       Two orbit solutions by Eggen (1963) - only #1 now in orbit catalog.     Egg1963 
           STF3018     AB-C: Star C (mag. 9.87, 19") is physical.                                      
                       Fekel (1986 private communication) reports that he has now detected             
                       four components in the spectrum of this star.                                   
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
23305-2231 ARA2289     AC: Also known as AOT 123.                                                      
23309+5825 STF3022     Lewis notes an additional 10th magnitude companion to B discovered by   L__1906b
                       Dawes but apparently never confirmed: 1841.82, 222.3 deg, 1".46, n=3            
23309+2747 LDS5097     NLTT 57090/57088                                                        Chm2004 
23310-6905 HJ 5402     B is CPD-69@3324.                                                               
23311+0841 GIC 194     G029-039/G029-040.                                                              
23313+5225 STT 498     Aa,Ab: The Guillaume 1913 measure is supposed to refer to this object.  Gui1932A
23315-0405 KO    3     Triple, with wide pair a CPM pair. The primary is an F8 dwarf, the BC           
                       pair (CLO   4BC) comprised of an M8.0V+L3.0V. Data sources: Palomar             
                       Sky Survey red (1951.9), UK Schmidt blue (1982.8), UK Schmidt red               
                       (1988.8), UK Schmidt near-IR (1994.5), 2MASS (1998.8), DENIS I                  
                       (1999.8).  Mean separation of wide pair (1951-1999) 7.530 +/- 0.007             
                       arcmin. Masses of the three components estimated at 1.02 +0.07/-0.06,           
                       0.088 +/- 0.002, and 0.072 +/- 0.001 Msun, respectively                 Cab2007b
23315-2857 B   602     Measures uncertain, too close. Needs speckle.                                   
23317+1956 WIR   1     This is the flare star EQ Peg. Component B is suspected to be the               
                       source of the flares, although both components may be flare stars.              
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
23322+0705 HU  298     P = 30.5y, a = 0.20", motion direct.                                            
23324-2155 LDS5098     NLTT 57164/57165                                                        Chm2004 
23328-1645 VOU  28     BC: The 1962 measure by van den Bos may not refer to this pair.         B__1963b
                       P = 28y, a = 0.59". Direct motion in a highly-inclined orbit.                   
23328-1651 LDS 816     See BC (VOU 28) at 23 32.7 -16 45.                                      Kui1943 
                       A-BC: NLTT 57183/57180                                                  Chm2004 
23331+4556 OSO 198     G216-052. Neither AB nor AD is a common proper motion pair, based on            
                       comparison with POSS2 red plates                                        Oso2004 
23331-2127 HDO 177     BD-22@6147?                                                                     
23333-2055 B  1900     101 Aqr.                                                                        
23334-1240 LDS2989     NLTT 57205/57204                                                        Chm2004 
23336+6028 STFA 60     AB: Pair appears in an appendix list, not part of the discoverer's              
                       regular numbering sequence.                                                     
23336+3234 OSO 199     G128-077. AB is a common proper motion pair, but AC is not, based on            
                       astrometry and color                                                    Oso2004 
23336+1749 LOS   1     Discovered while observing HO  655. A component is GSC 1723 2167.               
                       Magnitude of B estimated at 11.5.                                               
           HO  655     AC: Optical pair, based on study of relative motion of the components           
                       using the method of apparent motion parameters.                         Kiy2008 
23339-3340 SEE 491     Jessup claims A is double, but gives no data.                                   
23340+3120 BU  720     72 Peg. P = 241y, a = 0.45", motion direct. Variable?                           
                       Only elements P and T have been amended by Starikova (1982) from the    Sta1982b
                       orbit of Baize (1976).                                                  Baz1976 
                       Elements published for this long-period system differ: Costa (1966              
                       Urania, Barcelona 51, 73) quotes P = 198.6 yr, while Tel'nyuk-Adamchuk  TkA1966 
                       gives P = 425 yr. The observed theta and rho for 1975.953 are in                
                       reasonable agreement with either uncertain orbit.                       BLM1978 
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
23342+0218 A  2499     Companion only seen in 1911, and not in 1921, 1933, and 1934.                   
23346-1647 LDS2990     NLTT 57262/57259                                                        Chm2004 
23350+3302 OSO 200     G128-080. Not a common proper motion pair, based on color and                   
                       comparison with POSS2 red plates.                                       Oso2004 
23350+0136 MEL   9     GJ 900                                                                          
                       Malogolovets et al. (2007) combine all data to derive I-, K-, and       Mlg2007b
                       H-band absolute magnitudes for all three components, as well as                 
                       spectral types and masses:                                                      
                               I  +/-     K  +/-    H   +/-   spec   mass (Msun)                       
                         A:  6.66 0.08  4.84 0.08  5.11 0.08  K5-K7  0.64 - 0.67                       
                         B:  9.15 0.11  6.76 0.20  6.85 0.09  M3-M4  0.28 - 0.34                       
                         C: 10.08 0.26  7.39 0.31  7.54 0.15  M5-M6  0.16 - 0.24                       
                       BC probably form inner short-period (~20y) pair moving with A around            
                       mass center; A-BC period ~80y. Observed configuration may be due to             
                       relative tilts of orbital planes. 2MASS images show faint objects ~12"          
                       northeast and 15" south of primary; stars are probably late M dwarfs            
                       and possibly members of the GJ 900 system.                                      
23351-4237 B   603     Iota Phe. A variable of the Alpha CVn-type, spectrum A2VpSrCrEu.                
23352-1135 BU   81     Spectrum: Fm Delta Del.                                                         
23352-6441 HJ 5403     B is CPD-65@4149.                                                               
23355+3101 LDS6405     HIP 116421. See Allen et al. (2000) for information on metallicity,     AlC2000 
                       age, galactic orbital parameters, etc.                                          
23355+0850 BRT3372     J 2408.                                                                         
23357-2729 SEE 492     P = 78y, a = 0.57", motion direct.                                              
23358+0027 OSO 201     G029-050. Not a common proper motion pair, based on color               Oso2004 
23358-5832 RST5174     CD-59@8165.                                                                     
23364+0206 THP   1     16 Psc                                                                          
                       SB, period 45d, according to Cayrel de Strobel (1974 A&A 37, 179).              
                       Observed during occultation by asteroid 7 Iris. Separation and                  
                       position angle for 2006.342 constrained to two possibilities, under             
                       assumption asteroid has circular silhouette.                            Thp2006 
23366+5958 OSO 202     G241-060. None is a common proper motion pair, based on comparison              
                       with POSS2 red plates.                                                  Oso2004 
23370+0630 BRT2195     J 1730.                                                                         
23371+3927 A  1492     Closely sf BD+38@5037.                                                          
23373-2056 RSS 580     CPD-21@8282                                                                     
23374+0737 FOX 102     P = 183y, a = 0.30", motion direct, circular orbit.                             
23375+4426 STT 500     A premature orbit has been computed.                                            
23376+4627 STT 600     Lambda And. A is a spectroscopic binary and light variable.                     
                       AB is optical.                                                                  
23377+1650 ENG  87     74 Peg. A is a spectroscopic binary.                                            
23378+6601 HU 1324     P = 187y, a = 0.29", motion direct.                                             
23379+1824 KUI 117     75 Peg. A is a spectroscopic binary.                                            
23382+5514 A  1493     A premature orbit has been computed.                                            
23388-2816 B   608     Direct motion? Measures uncertain, too close. Needs speckle.                    
23389+2101 LDS5108     NLTT 57506/57507                                                        Chm2004 
23390+3932 MLB 911     ALI 1004.                                                                       
23392-1831 BHA  55     J 1425.                                                                         
23393+4543 A   643     P = 292y, a = 0.23", motion retrograde, circular orbit.                         
           CHR 149     1986.8914: This "prediscovery" confirmation was found by reexamination          
                       of archival data.                                                       McA1990 
                       Balega et al. (2004) notes that it is the B component of A   643, not   Bag2004 
                       the A component, which is comprised of the CHR 149 pair. The component          
                       designation has been changed from Aa,Ab to Ba,Bb accordingly.                   
                       Zhuchkov et al. (2008) give combined spectroscopic/astrometric orbits   Zhu2008 
                       for both wide and close pair.  Spectral types for A, Ba, and Bb are             
                       determined as G0III, F3III, and sdO-BVIII, respectively.  Magnitudes            
                       (assuming an integrated system magnitude of 7.63) are 8.53 +/- 0.03,            
                       8.66 +/- 0.04, and 9.51 +/- 0.05, while indiviual masses are estimated          
                       at 1.3 +/- 0.3, 1.3 +/- 0.3, and 0.7 +/- 0.4 Msun.                              
23395+6658 HJ 1897     Proper motion from Greenwich possibly reversed.                                 
23395-4638 DUN 251     Theta Phe.                                                                      
23398-0420 HWE  99     B is BD-05@6031.                                                                
23399+0538 BUP 240     Iota Psc. Optical.                                                              
23400+5446 STI3016     Also known as SMA 204.                                                          
23401+1258 HU 1325     P = 343y, a = 0.86", motion direct.                                             
23404+4420 HJ 1898     Kappa And. Optical.                                                             
23406+5513 HJ 1899     BDS 12513, HJ 1901 same star.                                                   
23409+2022 HO  303     P = 103y, a = 1.15", inclination 89 degrees.                                    
23411+4613 MLR   4     P = 20.75y, a = 0.147", motion direct.                                          
23412+0616 STF3031     B is BD+05@5208.                                                                
23414+5925 OSO 203     G241-064. None is a common proper motion pair, based on comparison              
                       with POSS2 red plates.                                                  Oso2004 
23414-3205 LDS2992     NLTT 57627/57628                                                        Chm2004 
23418-1749 HJ 5413     104 Aqr. A spectroscopic binary. B is BD-18@6359.                               
23419-0559 LDS5112     NLTT 57682/57675                                                        Chm2004 
           GC 32912    A: Combined solution, based on reduction of Hipparcos intermediate              
                       astrometric data together with spectroscopic elements from Vogt et al.  CPS2000c
                       (2000).                                                                 HaI2001 
23424+4956 HJ 1903     Burnham gives 1905.45, 247@, 18.2". The angle agrees better with John   Bu_1906 
                       Herschel's 1828 measure than with Espin's in 1912.                      Es_1914 
23424-1357 LDS2995     NLTT 57711/57710                                                        Chm2004 
23427-1433 BU  279     Omega (2) Aqr. A is a spectroscopic binary.                                     
23430-2407 LDS 823     Proper motion +1270 -2200.                                                      
                       NLTT 57749/57756                                                        Chm2004 
23431+1150 A  1242     A premature orbit has been computed.                                            
23432+5455 ES 1048     DE: Also known as STI3022.                                                      
23432-0837 FOX 276     J 1426.                                                                         
23433-7049 HJ 5415     Optical pair, based on study of relative motion of the components               
                       using the method of apparent motion parameters.                         Kiy2008 
23439+3232 LDS1070     Listed as double in ApJ 112, 214. L 1512-34a.                                   
23440+2922 AGC  14     78 Peg.                                                                         
23441+6147 STI1204     A is a semiregular variable, PZ Cas. B is a Cepheid.                            
                       Also known as MLR 515.                                                          
23442+4923 LDS5116     NLTT 57825/57826                                                        Chm2004 
23450+3020 OSO 204     G130-007. Not a common proper motion pair, based on comparison with             
                       POSS2 red plates.                                                       Oso2004 
23460+4625 MCA  75     Psi And. R.H. Wilson reported a wide, faint companion.                  WRH1950a
                       H. McAlister resolved the primary into a triple system.                 McA1978b
                       Aac: It is not established whether this third component belongs to Aa           
                       or Ab.                                                                          
23460-1841 H 2  24     H II 24. 107 Aqr. Alternative spectrum: F2III+F2V.                              
23461+6028 STF3037     E is BD+59@2769a.                                                               
23461+5040 STTA248     B is BD+49@4216.                                                                
23462+3515 OSO 205     G130-010. Not a common proper motion pair, based on comparison with             
                       POSS2 red plates.                                                       Oso2004 
23465-7159 HJ 5419     B is CPD-72@2782.                                                               
23467+6236 VBS  40     STI 1212.                                                                       
23471-1921 DON1053     BHA 56.                                                                         
23472-2624 LDS5121     NLTT 57957/57958                                                        Chm2004 
23474-2217 I   696     CD-22@16450.                                                                    
23476+4650 BU  995     A is a spectroscopic binary. One component is variable.                         
23479+0624 GIC 195     G030-015/G029-067. The B component is variable star DO Psc.                     
23479-0246 S   835     20 Psc.                                                                         
23484-2141 ARA1950     Possibly = HDO 179, suspected binary of Win1882.                                
23487+6453 STT 507     P = 566y, a = 0.74", motion direct. Spectrum A0pSrSi:Cr:.                       
                       Star C (mag. 8.6, 50") is probably optical.                                     
23488+6213 STT 508     6 Cas. The variable V566 Cas.                                                   
                       Aitken notes that Guillaume gives his 1923 measure without              Gui1932A
                       identification and that the other Guillaume measure goes with           A__1932a
                       STT 508AC. The pair was assigned the designation GUI 39, but nothing            
                       matching his separation and angle can be found in the vicinity of STT           
                       508. The GUI 39 designation has therefore been removed, under the               
                       assumption that Guillaume's measure was of STT 508 but there was some           
                       typographical error in his original reference. This assumption is               
                       supported by the fact that his angle of 19.5 could instead be 195, in           
                       good agreement with contemporaneous measures of the Struve AB pair, as          
                       well as the match of his wider pair with the Struve AC pair.                    
23489-2808 BU 1013     Delta Scl.                                                                      
23496+6052 STI1222     B is BD+60@2625a.                                                               
23496-2212 B   619     CD-22@16466.                                                                    
23498+2741 A   424     P = 140y, a = 0.23", motion direct.                                             
                       Only elements P, T, and a have been amended from the orbit of           Sta1978c
                       Morel (1969).                                                           Mrl1969c
23500+4829 OSO 206     G171-023. Not a common proper motion pair, based on comparison with             
                       POSS2 red plates.                                                       Oso2004 
23500+0843 OSO 207     G029-071. Not a common proper motion pair                               Oso2004 
23501+0253 WOR  29     An optical pair.                                                                
23506+4705 A   793     Often too close. Possible quadrant reversal about 1925.                         
23506-5142 SLR  14     P = 117y, a = 0.82", motion retrograde.                                         
                       High but rather imprecise mass-sum.                                     Sod1999 
23509+4730 A   794     A is the semiregular variable TZ And.                                           
23512+5123 ALD   7     Not found by Heintz at IDS position.                                    Hei1990b
23515+2501 POU5863     J  1799.                                                                        
23516+3844 ES 2541     ALI1006.                                                                        
23516+2502 POU5865     J  1800. Same as POU5866.                                                       
23518-0637 A  2700     P = 29.5y, a = 0.18", motion retrograde.                                        
                       Masses and bolometric magnitudes are derived for the two components             
                       of this system by Mason et al. (1999), based on assumed spectral types  Msn1999a
                       and available parallaxes.                                                       
                       See Baize & Petit (1989) catalog of doubles with variable component.    Baz1989d
23521+5845 ES 1804     Spectrum is variable G2-K.                                                      
23524+7533 BU  996     A is a spectroscopic binary.                                                    
23525-0924 OSO 208     G273-152. Common proper motion pair.                                    Oso2004 
23527+6042 BU 1153     D is STT 511 (23531+6042).                                                      
23527-0328 LDS3001     NLTT 58251/58250                                                        Chm2004 
23529-0309 FIN 359     24 Psc. P = 35y, a = 0.11", motion retrograde.                                  
                       Mason et al. (1997) orbit includes mass determination.                  Msn1997a
23530+4121 ARG 108     B is BD+40@5169.                                                                
23532-0830 LDS3003     NLTT 58273/58274                                                        Chm2004 
23536+5131 STTA251     AB: Pair appears in an appendix list, not part of the discoverer's              
                       regular numbering sequence.                                                     
23537-0140 HJ 3223     B is BD-02@6055.                                                                
23537-4926 I  1476     Measures uncertain, too close.                                                  
23542+3739 OL    7     ES 2004.                                                                        
23544-2703 LAL 192     Phi Sculptoris, a spectroscopic binary. Originally known as DUN 253 in  Dun1829 
                       Dunlop's original list and the ADS, the discovery designation of this   A__1932a
                       was changed at Lick for an unknown reason.                              IDS1963 
23549+2929 STTA252     B is BD+28@4667.                                                                
23553+5144 ES 2735     AC: Measures in 1911 by Espin, and in 1919 by Olivier, disagree, as     Es_1912 
                       noted by Aitken. The Olivier measure was later assigned to              Ol_1920a
                       23562+5138 ALD 123.                                                     A__1932a
23554-5845 HJ 5432     B is CPD-59@7939.                                                               
23561+2520 A   426     P = 94y, a = 0.57", motion retrograde.                                          
23562+5946 OSO 209     G217-024. Neither is a common proper motion pair, based on comparison           
                       with POSS2 red plates.                                                  Oso2004 
23564-0930 STF3046     AB: NLTT 58475/58476                                                    Chm2004 
23568+0444 A  2100     P = 88.6y, a = 0.267", motion retrograde.                                       
                       This system has a Delta m of 0.9 +/- 0.4 in the blue, as determined             
                       from lunar occultation measures by Africano (1975).                     Afr1975 
23568-4304 CPO 101     LDS 829.                                                                        
23570+2305 GIC 196     G129-045/G129-046.                                                              
23570-2836 LDS2065     NLTT 58501/58508                                                        Chm2004 
23572-1631 LDS 831     NLTT 58517/58518                                                        Chm2004 
23573+6102 STT 512     CD: Also recorded as D 28, BDS 12659 and TDS1229.                               
23573-1259 LDS 830     NLTT 58528/58527                                                        Chm2004 
23578+2508 MCA  76     Psi Peg.                                                                        
23579+1557 RUC  16     U Peg. Spectral type of resolved companion later than M5V.              Ruc2007 
23579-1700 LDS5143     NLTT 58570/58571                                                        Chm2004 
23581+6112 LEO  55     Both components are Cepheid variables, CE and CF Cas.                           
23581+2420 STF3048     AB: NLTT 58582/58579                                                    Chm2004 
23582-1725 DAE   8     NLTT 58589 = LP 746-40                                                          
                       Daemgen et al. (2007) derive a distance of 26.1 +/- 2.0 pc, separation  Dae2007 
                       of 49.7 +/- 3.8 AU, and predicted orbital period of 477+/- 58 yr.               
                       Spectral types are M2.0 +/- 0.5 and M2.0 +/- 0.5; masses for both are           
                       0.45 +/- 0.05 Msun.                                                             
23582-2756 HJ 3228     LDS2067.                                                                        
23582-5712 GC 33239    Hipparcos astrometric solution assumes circular orbit (e = omega = 0).  HIP1997d
23586+2412 GIC 197     NLTT 58602/58601                                                        Chm2004