…The moon's equatorial plane is tilted 6.7 degrees relative to the plane of its orbit, so it appears to wobble up and down, and the areas near the poles of the moon are more visible. This is called latitudinal libration. Also, because the observer is on the Earth's surface, the upper part of the moon is more visible during lunar rise and set. … *Some of the terminology explanations that mention "latitudinal libration" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…月の赤道面が月の軌道面に対して6.7度傾いているため,上下にゆれて見え,月の両極付近がよけいに見える。これを緯度秤動と呼ぶ。また観測者が地表にいるため,月の出入りのときには月の上部がよけいに見える。… ※「緯度秤動」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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