right ascension
参考词典中right ascension的常规释义：
基本释义
- 赤经
英英解释
1个名词解释
- (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] celestial longitude, ra, right ascension
[例]- one hour of right ascension equals fifteen degrees
点击查看……- (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
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