sidereal year

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[edit] English

[edit] Noun

sidereal year (plural sidereal years)

  1. The orbital period of the Earth; a measure of the time it takes for the Sun to return to the same position with respect to the stars of the celestial sphere. A sidereal year is about 20.4 minutes longer than the tropical year due to precession of the equinoxes.

[edit] Translations

orbital period

[edit] See also

[edit] External links

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