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Right ascension   /raɪt əsˈɛnʃən/   Listen
Right ascension

noun
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.  Synonyms: celestial longitude, RA.






WordNet 3.0 © 2010 Princeton University








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"Right ascension" Quotes from Famous Books



... two; it occupied the very crown of the heavens. With the single exception of the Little Bear, which it nearly surrounds, the Dragon was the only constellation that never set. Next, the Water-snake (see diagram, p. 200) lay at this time right along the equator, extending over 105 deg. of Right Ascension; or, to put it less technically, it took seven hours out of the twenty-four to cross the meridian. It covered nearly one-third of the equatorial belt. Thirdly, the intersection of the equator with one of the ...
— The Astronomy of the Bible - An Elementary Commentary on the Astronomical References - of Holy Scripture • E. Walter Maunder



Words linked to "Right ascension" :   angular distance, astronomy, uranology, celestial longitude



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