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right ascension

right ascension, in astronomy, one of the coordinates in the equatorial coordinate system. The right ascension of a celestial body is the angular distance measured eastward from the vernal equinox along the celestial equator to its intersection with the body's hour circle.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved.

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right ascension: meaning and definitions - right ascension: Definition and Pronunciation
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hour circle - hour circle hour circle, in astronomy, a secondary axis in the equatorial coordinate system. The ...
equatorial coordinate system - equatorial coordinate system equatorial coordinate system, the most commonly used astronomical ...
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