celestial equator(n = noun.location) equinoctial, equinoctial circle, equinoctial line - the great circle on the celestial sphere midway between the celestial poles; Array
is a kind of great circle
celestial, celestial body, celestial city, celestial globe, celestial guidance, celestial hierarchy, celestial horizon, celestial latitude, celestial longitude, celestial mechanics, celestial navigation, celestial orbit, celestial point, celestial pole, celestial sphere, equator, magnetic equator, north celestial pole, south celestial pole