/ftp/cats/aliases/W/WDS_1_



==========================================================================
B/wds    The Washington Visual Double Star Catalog            (Mason+ 2001-2020)
The following files can be converted to FITS (extension .fit or fit.gz)
	wds.dat notes.dat refs.dat
==========================================================================
Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=B/wds
==========================================================================

drwxr-xr-x 58 cats archive 4096 Mar 28 07:45 [Up] drwxr-xr-x 9 cats archive 4096 Mar 24 07:45 [TAR file] -rw-r--r-- 1 cats archive 476 Mar 11 09:52 .message -r--r--r-- 1 cats archive 39425 Mar 11 09:46 ReadMe -rw-r--r-- 1 cats archive 3043 Mar 11 09:51 +footg5.gif -rw-r--r-- 1 cats archive 59118 Mar 11 09:51 +footg8.gif -r--r--r-- 1 cats archive 832301 Mar 11 09:37 notes.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 415084 Mar 11 09:50 refs.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html] drwxr-xr-x 353 cats archive 12288 Mar 11 09:38 versions -r--r--r-- 1 cats archive 6387558 Mar 11 09:47 wds.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : B/wds The Washington Visual Double Star Catalog (Mason+ 2001-2020) ================================================================================ The Washington Visual Double Star Catalog (WDS), Version 2024-03-11 Mason B.D., Wycoff G.L., Hartkopf W.I., Douglass G.G., Worley C.E. <Astron. J. 122, 3466 (2001)> =2001AJ....122.3466M ================================================================================ ADC_Keywords: Stars, double and multiple ; Positional data Description: The Washington Visual Double Star Catalog (WDS) is the successor to the Index Catalogue of Visual Double Stars, 1961.0 (IDS; Jeffers and van den Bos, Publ. Lick Obs. 21). Three earlier double star catalogs in XXth century, those by Burnham (BDS, 1906, "General Catalogue of Double Stars within 121 degrees of the North Pole", Carnegie Institution of Washington), Innes (SDS, 1927, "Southern Double Star Catalogue -19 to -90 degrees", Union Observatory, Johannesburg, South Africa), and Aitken (ADS, 1932 "New General Catalogue of Double Stars within 121 degrees of the North Pole", Carnegie Institution of Washington), each covered only a portion of the sky. Both the IDS and the WDS cover the entire sky, and the WDS is intended to contain all known visual double stars for which at least one differential measure has been published. The WDS is continually updated as published data become available. Prior to this, three major updates have been published (Worley and Douglass 1984, "Washington Visual Double Star Catalog, 1984.0", U.S. Naval Observatory, Washington; Worley and Douglass 1997A&AS..125..523W, Cat. I/237; Mason, Wycoff, Hartkopf, Douglass and Worley 2001AJ....122.3466M; and Mason et al. 2006.5). The Washington Double Star Catalog (WDS) has seen numerous changes since the last major release of the catalog. The application of many techniques and considerable industry over the past few years has yielded significant gains in both the number of systems and the number of measures. Is is maintained by the US Naval Observatory, and represents the world's principal database of astrometric double and multiple star information. The WDS 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 the systems. Acknowledgement of Usage: 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."