Right ascension — (abbrev. RA; symbol α) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. The other coordinate is the declination.ExplanationRA is the celestial equivalent of… … Wikipedia
Right ascension — Right Right (r[imac]t), a. [OE. right, riht, AS. riht; akin to D. regt, OS. & OHG. reht, G. recht, Dan. ret, Sw. r[ a]tt, Icel. r[ e]ttr, Goth. ra[ i]hts, L. rectus, p. p. of regere to guide, rule; cf. Skr. [.r]ju straight, right. [root]115. Cf.… … The Collaborative International Dictionary of English
Right ascension — Ascension As*cen sion, n. [F. ascension, L. ascensio, fr. ascendere. See {Ascend}.] 1. The act of ascending; a rising; ascent. [1913 Webster] 2. Specifically: The visible ascent of our Savior on the fortieth day after his resurrection. ( Acts i.… … The Collaborative International Dictionary of English
right ascension — ► NOUN Astronomy ▪ position measured along the celestial equator, expressed in hours, minutes, and seconds … English terms dictionary
right ascension — n. Astron. the angular distance of the hour circle of a celestial body from the vernal equinox, measured eastward along the celestial equator and expressed in degrees (from 0 to 360) or, more commonly, in hours (from 0 to 24), minutes, and… … English World dictionary
right ascension — Astron. the arc of the celestial equator measured eastward from the vernal equinox to the foot of the great circle passing through the celestial poles and a given point on the celestial sphere, expressed in degrees or hours. [1585 95] * * * ▪… … Universalium
right ascension — Refraction Re*frac tion (r?*fr?k sh?n), n. [F. r[ e]fraction.] 1. The act of refracting, or the state of being refracted. [1913 Webster] 2. The change in the direction of ray of light, heat, or the like, when it enters obliquely a medium of a… … The Collaborative International Dictionary of English
right ascension — right′ ascen′sion n. astron. the arc of the celestial equator measured eastward from the vernal equinox to the foot of the great circle passing through the celestial poles and a given point on the celestial sphere, expressed in degrees or hours • … From formal English to slang
right ascension — noun Date: 15th century the arc of the celestial equator between the vernal equinox and the point where the hour circle through a given body intersects the equator reckoned eastward commonly in terms of the corresponding interval of sidereal time … New Collegiate Dictionary
Right ascension — … Википедия
