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Raresidereal year
The correct spelling is sidereal year.
How to pronounce sidereal year
noun
Say it like: Sid-eree-lee-r
The correct spelling is sidereal year. 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…
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Definition
noun
- 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 (which is what is kept stable by the Gregorian calendar) due to precession of the equinoxes.
- 2.The time it takes for any astronomical object in orbit around a central star to orbit that star, with respect to distant stars.
Similar words
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