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geocentric parallax
geocentric parallax n (Astronomy) See parallax2 Thesaurus| Noun | 1. geocentric parallax - the parallax of a celestial body using two points on the surface of the earth as the earth rotatesdiurnal parallaxparallax - the apparent displacement of an object as seen from two different points that are not on a line with the objecthorizontal parallax - the maximum parallax observed when the celestial body is at the horizonsolar parallax - the angle subtended by the mean equatorial radius of the Earth at a distance of one astronomical unit |
geocentric parallax
geocentric parallax See diurnal parallax.Geocentric Parallax (or diurnal parallax), the angle whose vertex is at the center of a celestial body and whose sides extend to the center of the earth and to the point of observation on the earth’s surface. (See.) geocentric parallax[¦jē·ō¦sen·trik ′par·ə‚laks] (astronomy) The difference in the apparent direction or position of a celestial body, measured in seconds of arc, as determined from the center of the earth and from a point on its surface; this varies with the body's altitude and distance from the earth. Also known as diurnal parallax. geocentric parallax
Synonyms for geocentric parallaxnoun the parallax of a celestial body using two points on the surface of the earth as the earth rotatesSynonymsRelated Words- parallax
- horizontal parallax
- solar parallax
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