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The Washington Double Star Catalog (WDS) maintained by the United States Naval Observatory is the world's principal database of astrometric double and multiple star information. The WDS Catalog contains positions (J2000), discoverer designations, epochs, position angles, separations, magnitudes, spectral types, proper motions, and, when available, Durchmusterung numbers and notes for the components of 103,861 systems based on 750,563 means.
The WDS has seen numerous changes
since the last major incarnation of the catalog (WDS 2001.0,
B.D. Mason, G.L. Wycoff, W.I. Hartkopf, G.G. Douglass, & C.E. Worley, AJ, 122,
3466; 2001).
below.
If the WDS and associated databases were helpful for your research work, the following acknowledgement would be appreciated:
``This research has made use of the Washington Double Star Catalog maintained at the U.S. Naval Observatory.''
A notification of references to relevant papers is appreciated.
This page is maintained by Brian Mason
Updated: 2 October 2008