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declination |
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declination, in astronomy, one of the coordinates in the equatorial coordinate system equatorial coordinate system, the most commonly used astronomical coordinate system for indicating the positions of stars or other celestial objects on the celestial sphere . The celestial sphere is an imaginary sphere with the observer at its center. ..... Click the link for more information. . The declination of a celestial body is its angular distance north or south of the celestial equator measured along its hour circle hour circle, in astronomy, a secondary axis in the equatorial coordinate system . The hour circle of a celestial body is the great circle on the celestial sphere that passes through both the body and the north celestial pole. ..... Click the link for more information. . declination 1. Astronomy the angular distance, esp in degrees, of a star, planet, etc., from the celestial equator measured north (positive) or south (negative) along the great circle passing through the celestial poles and the body 2. See magnetic declination declination [‚dek·lə′nā·shən] (astronomy) The angular distance of a celestial object north or south of the celestial equator. (geophysics) The angle between the magnetic and geographical meridians, expressed in degrees and minutes east or west to indicate the direction of magnetic north from true north. Also known as magnetic declination; variation. (navigation) In a system of polar or spherical coordinates, the angle at the origin between a line to a point and the equatorial plane, measured in a plane perpendicular to the equatorial plane. The arc between the equator and the point measured on a great circle perpendicular to the equator. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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angle of clearance angle of climb angle of commutation angle of contact angle of contingence angle of current angle of cut Angle of declination angle of deflection angle of departure angle of depression angle of descent angle of deviation angle of dip angle of divergence |
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