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天文計算

2 件の記事

Animation of the Moon as it cycles through its phases, as seen from the Northern Hemisphere. The apparent wobbling of the Moon is known as libration.

太陰月（ルナ・マンス）の定義と5つの天文学的周期

太陰月朔望月恒星月近点月
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Probable lunar occultations of Venus, 2020 to 2060. These are calculated by a simple method that may include some near occultations. The blue points represent occultations closer to the moon's ascending node while the red are closer to the descending node. Note the series of five in 2054, which have been checked.

金星の掩蔽月が金星を隠す天体現象のメカニズムと歴史

金星月掩蔽天文学
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