| 释义 |
celestial longitude
celestial longitude n. The angular distance of a celestial body from the vernal equinox, measured eastward along the ecliptic to a great circle passing sequentially through the body in question and the pole of the ecliptic. Also called ecliptic longitude. celestial longitude n (Astronomy) the angular distance measured eastwards from the vernal equinox to the intersection of the ecliptic with the great circle passing through a celestial body and the poles of the ecliptic. Also called: ecliptic longitude Thesaurus| Noun | 1. | celestial longitude - (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"right ascension, RAastronomy, uranology - the branch of physics that studies celestial bodies and the universe as a wholeangular distance - the angular separation between two objects as perceived by an observer; "he recorded angular distances between the stars" |
Translationscelestial longitude
celestial longitude (ecliptic longitude) See ecliptic coordinate system.celestial longitude[sə′les·chəl ′län·jə‚tüd] (astronomy) Angular distance east of the vernal equinox, along the ecliptic; the arc of the ecliptic or the angle at the ecliptic pole between the circle of latitude of the vernal equinox and the circle of latitude of a point on the celestial sphere, measured eastward from the circle of latitude of the vernal equinox, through 360°. Also known as ecliptic longitude. celestial longitudeThe celestial longitude of a body is the arc of the ecliptic contained between the first point of Aries and the secondary ecliptic through that body measured eastward from Aries. It is the angular distance along the ecliptic from the vernal equinox eastward. See celestial latitude.celestial longitude
Synonyms for celestial longitudenoun (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 skySynonymsRelated Words- astronomy
- uranology
- angular distance
|