bn:00017006n
Noun Concept
Categories: Circles, Dynamics of the Solar System, Articles with short description, Celestial coordinate system, Planes (geometry)
EN
celestial equator  equinoctial circle  equinoctial line  equinoctial  Celestial plane
EN
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EN
The celestial equator is the great circle of the imaginary celestial sphere on the same plane as the equator of Earth. Wikipedia
A great circle on the celestial sphere, coincident with the plane of earth's equator. Wiktionary
The great circle midway between the celestial poles; the celestial equator. Wiktionary
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