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celestial equator Definition

celestial equator

noun

the great circle formed on the celestial sphere by extending the plane of the earth's equator

celestial equator Usage Examples

Converse of object

  • cross: Equinox The two points at which the Sun crosses the celestial equator in its yearly path in the sky.
  • intersect: The equinoxes are the two points on the celestial sphere where the ecliptic intersects the celestial equator.