celestial+sphere
41celestial latitude — The angular distance on the celestial sphere measured north or south of the ecliptic along the great circle passing through the poles of the ecliptic and the celestial object. It is measured in degrees along the circle of latitude. Today, this… …
42sphere — [[t]sfɪər[/t]] n. v. sphered, spher•ing 1) math. a) a solid geometric figure generated by the revolution of a semicircle about its diameter; a round body whose surface is at all points equidistant from the center b) the surface of such a figure;… …
43celestial latitude — noun (astronomy) the angular distance of a celestial body north or to the south of the celestial equator; expressed in degrees; used with right ascension to specify positions on the celestial sphere • Syn: ↑declination, ↑dec • Topics: ↑astronomy …
44sphere — I (New American Roget s College Thesaurus) n. orb, globe, ball; environment, province, status, field, range. See business, region, rotundity, space. II (Roget s IV) n. 1. [A round body] Syn. ball, globule, orb; see circle 1 . 2. [The celestial… …
45celestial equator — noun Date: 1848 the great circle on the celestial sphere midway between the celestial poles …
46Celestial horizon — The celestial horizon, also called the rational horizon, is a great circle parallel to the horizon, the center of which is the center of the Earth.ee also*Celestial sphere …
47celestial coordinates — Set of numbers used to pinpoint the position in the sky (see celestial sphere) of a celestial object. Coordinate systems used include the horizon system (altitude and azimuth), galactic coordinates, the ecliptic system (measured relative to the… …
48celestial triangle — An astronomical triangle on the surface of the celestial sphere whose vertices are the zenith, an elevated pole, and a given celestial body …
49celestial equator — noun the great circle on the celestial sphere midway between the celestial poles • Syn: ↑equinoctial circle, ↑equinoctial line, ↑equinoctial • Derivationally related forms: ↑equinoctial (for: ↑equinoctial) …
50celestial longitude — noun (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… …
