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HD 257939


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Equatorial coordinates of double and multiple star components measured on GPO astrographic plates
Equatorial coordinates are given for some of the multiple starcomponents having incomplete or inconsistent information in the IndexCatalog of Visual Double Stars. Two photographic plates were taken foreach system with incomplete or inconsistent information using the GPOastrograph. The plate measurement and reduction techniques used aredescribed.

Etoiles doubles nouvelles (7^{e} série) découvertes à Nice à la lunette de 50 CM
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1972A&AS....6..177C&db_key=AST

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Observation and Astrometry data

Constellation:Gémeaux
Right ascension:06h28m53.42s
Declination:+19°29'14.8"
Apparent magnitude:10.691
Proper motion RA:-0.4
Proper motion Dec:-5.4
B-T magnitude:11.02
V-T magnitude:10.719

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 257939
TYCHO-2 2000TYC 1336-1720-1
USNO-A2.0USNO-A2 1050-03662416
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