Category:Zenith Distance

This category contains results about Zenith Distance.
Definitions specific to this category can be found in Definitions/Zenith Distance.

Let $X$ be the position of a star (or other celestial body) on the celestial sphere.

The zenith distance $\zeta$ of $X$ is defined as the angle subtended by the the arc of the vertical circle through $X$ between $X$ and the zenith.