Celestial equator
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The celestial equator is a great circle on the imaginary celestial sphere, which could be constructed by inflating the Earth's equator until it intersects with said sphere. The celestial equator is inclined by ~23.5°, with respect to the ecliptic plane; a result of axial tilt.
Template:Astro-stubda:Himlens ækvator
de:Himmelsäquator
it:Equatore celeste
nl:Hemelequator
pl:Równik niebieski
th:เส้นศูนย์สูตรฟ้า
zh:天赤道