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Equatorial Coordinate System

(latitude/longitude-like system for the celestial sphere)

The Equatorial Coordinate System is a spherical coordinate system used for directions in the Celestial Sphere, fixed to the stars/constellations as seen from Earth. Elements:

It (and the closely related International Celestial Reference System) is commonly used for planetary orbit calculation and its coordinates are those generally used in identifying and naming objects (e.g., J Designators).

(coordinate system,equatorial,celestial sphere,Earth)

Referenced by:
Celestial Coordinate System
Celestial Sphere
Galactic North
International Celestial Reference System (ICRS)
J Designator