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RIGHT ASCENSION





Definition:

  1. [noun] (astronomy) the angular distance eastward along the celestial equator from the vernal equinox to the intersection of the hour circle that passes through the body; expressed in hours and minutes and second; used with declination to specify positions on the celestial sphere; "one hour of right ascension equals fifteen degrees"
    Synonyms: RA, celestial longitude

  2. [noun] an arc of the celestial equator eastward from the vernal equinox

Synonyms:






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