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Colure
Colure, in astronomy, is either of the two principal meridians of the celestial sphere. ==Equinoctial colure== The ''equinoctial colure'' is the meridian or great circle of the celestial sphere which passes through the celestial poles and the two equinoxes: the first point of Aries and the first point of Libra.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Colure」の詳細全文を読む
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