近きん点てん年ねん

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ん

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ん

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Meanings

1

noun

anomalistic year

Technical astronomical term: the time between two consecutive perihelion passages of the Earth.

spot, point, mark

年year, counter for years

恒こう星せい年ねん
恒星年 (sidereal year) is based on Earth's orbit relative to fixed stars, while 近点年 (anomalistic year) is based on perihelion passages.
回かい帰き年ねん
回帰年 (tropical year) is based on the seasons (equinox to equinox), while 近点年 (anomalistic year) is based on the Earth's elliptical orbit.

Compound of 近点 (periapsis, from 近 'near' and 点 'point') and 年 (year).