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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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