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celestial coordinate system

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

  • Galactic coordinate system — Artist s depiction of the Milky Way galaxy, showing the galactic longitude relative to the sun. The galactic coordinate system (GCS) is a celestial coordinate system which is centered on the Sun and is aligned with the apparent center of the… …   Wikipedia

  • Equatorial coordinate system — The equatorial coordinate system is probably the most widely used celestial coordinate system, whose equatorial coordinates are: * declination (delta) * right ascension (alpha) also RA , or hour angle (H) also HA It is the most closely related to …   Wikipedia

  • Horizontal coordinate system — The horizontal coordinate system is a celestial coordinate system that uses the observer s local horizon as the fundamental plane. This conveniently divides the sky into the upper hemisphere that you can see, and the lower hemisphere that you… …   Wikipedia

  • Ecliptic coordinate system — The ecliptic coordinate system is a celestial coordinate system that uses the ecliptic for its fundamental plane. The ecliptic is the path that the sun appears to follow across the sky over the course of a year. It is also the projection of the… …   Wikipedia

  • Polar coordinate system — Points in the polar coordinate system with pole O and polar axis L. In green, the point with radial coordinate 3 and angular coordinate 60 …   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 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

  • 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

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