Astronomy   View all facts   Glossary   Help
abstraction > mathematical concept > geometrical object > plane > equator > celestial equator
Next equatorgalactic equator    Upequator

celestial equator comparison table
Subject is a kind of has definition
equatorplaneThe great circle on the surface of a body formed by the intersection of the surface with the plane passing through the center of the body perpendicular to the axis of rotation. (See celestial equator.)
celestial equatorequatorProjection of the Earth's equator as a line across the sky (so that to an observer actually on the equator, such a line would pass through the zenith). The directional bearing of a star is given in terms of its right ascension round the celestial equator.

Next equatorgalactic equator    Upequator