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Noun: right ascension  rIt u'sen-shun
  1. (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";
    - RA, celestial longitude

Derived forms: right ascensions

Type of: angular distance

Encyclopedia: Right ascension

Nearest

Rigel
rigged
rigger
rigger brush
rigging
Riggs' disease
Riggs's disease
right
right along
right angle
right ascension
right atrioventricular valve
right atrium
right atrium of the heart
right away
Right Bank
right brain
right coronary artery
right field
right fielder
right gastric artery