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• Coordinate System (astronomy) - MSN Encarta

  Coordinate System astronomy, in astronomy, any of the various mapping systems used to locate objects in the heavens, just as longitude and latitude...

• Astronomy Hypertext: Astronomical Coordinate Systems

  To locate an object on the sky, astronomers use several different coordinate systems which are similar in concept to the system for plotting a point in a plane.

• Astronomical Coordinate Systems

  Positions and Coordinate Systems One of the basic needs of astronomy, as well as other physical sciences, is to give reasonable descriptions for the positions of objects relative to ...