celestial longitude是什么意思-celestial longitude英文怎么读-英汉词典翻译

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Noun:

(astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and seconds; used with declination to specify positions on the celestial sphere;
"one hour of right ascension equals fifteen degrees"

According to its theoretical model of the true geocentric longitude, the astronomical meaning of planetary theory in ancient China is revealed.
又利用行星之地心真黄经的理论模型，探讨了中国古代行星算法模型的天文意义。

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celestial longitude