B1950.0
B1950.0 The B1950.0 epoch is used in astronomy. Since ... many old star tables are still useful, B1950.0 cannot just be shelved. For comparison ... Conversion of positions and proper motions from B1950.0 to the IAU system at J2000 ...
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Image:DSC00710.Jpg   (translated from Chinese)
Image:DSC00710.Jpg B1950.0EraUse in astronomy Because of starRight ascensionWithDeclinationCan ... era to take the reference point frequently B1950.0 standards are already succeeded the standardJ2000 ... Conversion of positions and proper motions from B1950.0 to the IAU system at J2000 ...
http://zh.wikipedia.org/wiki/B1950.0 - 1k - Cached (Chinese) - Wikipedia (Chinese) - Similar pages

Talk:B1950.0
Talk:B1950.0 Is there a formula for converting right ascention and declination from the B1950.0 values to values for the current ...
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B1900.0
... standard was superseded by the succeeding epoch, B1950.0. The current one in standard use ...
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J2000.0
... that was in standard use was the B1950.0 epoch. When the mean equator and ...
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J2000.0   (translated from German)
... since 1984 to be used - contrary to B1950.0, according to the theory that common ...
http://de.wikipedia.org/wiki/J2000.0 - 2k - Cached (German) - Wikipedia (German) - Similar pages

Category:960 years   (translated from Chinese)
... are substituted for by the successor standard: B1950.0 as well as the present usesJ2000 ...
http://zh.wikipedia.org/wiki/B1900.0 - 0k - Cached (Chinese) - Wikipedia (Chinese) - Similar pages

Image:DSC00710.Jpg   (translated from Chinese)
... point frequently The early era standard is B1950.0 era Use for in the J2000 ...
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Milky Way coordinate   (translated from Japanese)
... Way equator. Concrete 1959 year IAU With,B1950.0 Right ascension 12h49m and the declination ... 17h42m26.603s and declination -28°55'00.445 "(B1950.0) With it becomes. J2000.With 0 ...
http://ja.wikipedia.org/wiki/銀河座標 - 7k - Cached (Japanese) - Wikipedia (Japanese) - Similar pages

Galactic coordinate system
... 12h49m, Dec=27�24′ in the then-used B1950 epoch; in the currently-used J2000.0 ... equator was at 17h42m26.603s, −28�55′00.445″ (B1950) or 17h45m37.224s, −28�56′10.23″ (J2000), and ...
http://en.wikipedia.org/wiki/Galactic_coordinate_system - 5k - Cached - Similar pages