こうせいねん
恒星年
1. a sidereal year
2. Sidereal yearA sidereal year is the time taken by the Earth to orbit the Sun once with respect to the fixed stars. Hence it is also the time taken for the Sun to return to the same position with respect to the fixed stars after apparently travelling once around the ecliptic. It was equal to 365.256363004 days at noon 1 January 2000. This is 2024.5128 longer than the mean tropical year at J2000.0. The word "sidereal" is derived from the Latin sidus meaning "star".
Read “Sidereal year” on English Wikipedia
Read “恒星年” on Japanese Wikipedia
Read “Sidereal year” on DBpedia
Read “Sidereal year” on English Wikipedia
Read “恒星年” on Japanese Wikipedia
Read “Sidereal year” on DBpedia
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