declination of a celestial body

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• declination — [dek΄lə nā′shən] n. [ME declinacioun < L declinatio: see DECLENSION] 1. a bending or sloping downward; deviation from the horizontal or vertical 2. an oblique variation from some definite direction 3. the angle formed by a magnetic needle with …   English World dictionary

• declination — i. The angular difference in direction between magnetic north and true north, or between grid north and true north; hence, magnetic declination and grid declination. ii. The angular distance of a celestial body from the celestial equator along… …   Aviation dictionary

• celestial coordinates — Two coordinates on the surface of the celestial sphere used to determine the position of a celestial body. Two sets of celestial coordinates are in common use: the equinoctial system, in which the coordinates are a declination and an hour circle …   Aviation dictionary

• celestial navigation — navigation by means of observations made of the apparent position of heavenly bodies. Also called astronavigation, celo navigation. [1935 40] * * *       use of the observed positions of celestial bodies to determine a navigator s position. At… …   Universalium

• celestial 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 …   Useful english dictionary

• declination — declinational, adj. /dek leuh nay sheuhn/, n. 1. a bending, sloping, or moving downward. 2. deterioration; decline. 3. a swerving or deviating, as from a standard. 4. a polite refusal. 5. Astron. the angular distance of a heavenly body from the… …   Universalium

• Celestial coordinate system — For other uses of Celestial , see Celestial (disambiguation). Orientation of Astronomical Coordinates Orientation of the galactic, ecliptic and equatorial coordinate systems, projected on the celestial sphere, showing the galactic equator (black) …   Wikipedia

• declination — The angular distance to a body on the celestial sphere measured north or south through 90 degrees from the celestial equator along the hour circle of the body. Comparable to latitude on the terrestrial sphere. See also magnetic declination;… …   Military dictionary

• declination — /dɛkləˈneɪʃən/ (say dekluh nayshuhn) noun 1. Astronomy the angular distance of a heavenly body from the celestial equator, measured on a great circle passing through the celestial pole and the body. 2. Also, magnetic declination, magnetic… …  

• declination — dec•li•na•tion [[t]ˌdɛk ləˈneɪ ʃən[/t]] n. 1) a bending, sloping, or moving downward 2) deterioration 3) deviation, as from a standard 4) a polite refusal 5) astron. the angular distance of a heavenly body from the celestial equator, measured on… …   From formal English to slang

• Equinox (celestial coordinates) — In astronomy, equinox is a moment in time at which the vernal point, celestial equator, and other such elements are taken to be used in the definition of a celestial coordinate system. The position at other equinoxes can be computed by taking… …   Wikipedia