Celestial equator

imaginary circle which separates the celestial sphere into two equal halves

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 out into space. As result of the Earth's axial tilt, the celestial equator is inclined by ~23.5° with respect to the ecliptic plane.
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Noun
1. the great circle on the celestial sphere midway between the celestial poles
(synonym) equinoctial circle, equinoctial line, equinoctial
(hypernym) great circle
(hyponym) right ascension

EQUATORE CELESTE

Eng: celestial equator
Urdu: سماوی استوا۔ معدل النہار۔ فلکی استوا۔