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right ascension is a noun meaning "(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". It carries one recorded sense.
(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”
astronomy
Definitions, synonyms and semantic relations for right ascension come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.