Last Updated
：2025/11/21
draconic month
Noun
Japanese Meaning
同じ軌道節点（昇交点または降交点）を月が連続して通過するまでの期間。 / 歳差運動により恒星月よりも短い。 / 平均で約27日5時間5分35.8秒の期間である。
（ plural ）
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A period of time between two consecutive passages of the Moon through the same orbital node. The draconic month is shorter than the sidereal month, due to precession of the Moon's orbit. An average one lasts 27 days, 5 hours, 5 minutes, 35.8 seconds.
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draconic month
During a draconic month, the Moon passes through the same orbital node again, a period that averages 27 days, 5 hours, 5 minutes, 35.8 seconds.
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During a draconic month, the Moon passes through the same orbital node again, a period that averages 27 days, 5 hours, 5 minutes, 35.8 seconds.
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