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Summary Of: Sidereal day

A sidereal day is around 4 minutes shorter than a mean solar day... The precise definition of a sidereal day is the time taken for one rotation of the Earth in this precessing reference frame... A mean sidereal day is about 23 h 56 m 4... an accurate value for the sidereal day at the beginning of 2000 is... vector sum of the rotations leading to the sidereal day and the precession of that rotation vector...

Encyclodia Page On: Sidereal day

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sidereal day".