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Celestial equator - Wikipedia, the free encyclopedia
The celestial equator is a great circle on the imaginary celestial sphere, in the same plane as the Earth's equator. In other words, it is a projection of the terrestrial equator ...
Equator (astronomy) definition of Equator (astronomy) in the Free ...
Encyclopedia article about Equator (astronomy). Information about Equator (astronomy) in the Columbia Encyclopedia, Computer Desktop Encyclopedia, computing dictionary.
Equator (astronomy) - MSN Encarta
Equator astronomy, in astronomy, the great circle in which the plane of the equator of the earth intersects the celestial sphere. The celestial...

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Equator (astronomy), in astronomy, the great circle in which the plane of the equator of the earth intersects the celestial sphere. The celestial equator is the line from which the declination of stars and planets is measured. See Ecliptic.