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celestial coordinate

См. также в других словарях:

  • 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

  • celestial coordinate — noun : a member of any system of coordinates used for locating a point on the celestial sphere compare ecliptic coordinate, equator system of coordinate, galactic coordinate, horizon coordinate …   Useful english dictionary

  • Celestial sphere — [ celestial equator.] In astronomy and navigation, the celestial sphere is an imaginary rotating sphere of gigantic radius , concentric and coaxial with the Earth. All objects in the sky can be thought of as lying upon the sphere. Projected from… …   Wikipedia

  • Celestial pole — The north and south celestial poles and their relation to axis of rotation, plane of orbit and axial tilt …   Wikipedia

  • celestial sphere — the imaginary spherical shell formed by the sky, usually represented as an infinite sphere, the center of which is a given observer s position. [1875 80] * * * Apparent surface of the heavens, on which the stars seem to be fixed. For the purpose… …   Universalium

  • Celestial mechanics — is the branch of astrophysics that deals with the motions of celestial objects. The field applies principles of physics, historically classical mechanics, to astronomical objects such as stars and planets to produce ephemeris data. Orbital… …   Wikipedia

  • Coordinate time — In the theory of relativity, it is convenient to express results in terms of a spacetime coordinate system relative to an implied observer. In many (but not all) coordinate systems, an event is specified by one time coordinate and three spatial… …   Wikipedia

  • celestial mechanics — the branch of astronomy that deals with the application of the laws of dynamics and Newton s law of gravitation to the motions of heavenly bodies. [1815 25] * * * Branch of astronomy that deals with the mathematical theory of the motions of… …   Universalium

  • celestial 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… …   Aviation dictionary

  • celestial 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… …   Universalium

  • celestial 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… …   Useful english dictionary

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