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单词 first point of capricorn
释义

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first point of Capricorn
first point of Capricorn n. the point of the celestial sphere at which the ecliptic touches the tropic of Capricorn tangentially, which the sun passes at the winter solstice in the northern hemisphere and which was formerly in Capricorn but is now in Sagittarius, owing to precession.
ΚΠ
1594 T. Blundeville Exercises 293 270..is the right ascention of the first point of Capricorne.
1703 W. Alingham Short Acct. Nature & Use Maps xv. 43 In this Position also, there is a certain Portion of the Ecliptick, equidistant from the first point of Capricorn, that never rises.
1956 Trans. Amer. Philos. Soc. 46 164/1 The right ascensions are reckoned from the first point of Capricorn.
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更新时间:2024/12/24 9:54:51