right ascension 详细解释
right ascension
赤经
英英释义
名词 right ascension:
(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
同义词：RA, celestial longitude
补充
right ascensionright ascension1.赤经热门单词推荐
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