Definition:Culmination

Definition
Consider the celestial sphere $C$ whose observer is $O$.

Let $B$ be a celestial body on $C$.

Let $P_\delta$ be the parallel of declination along which $B$ travels.

The two points of culmination of $B$ are the points at which it crosses the principal vertical circle.


 * Celestial-Sphere-with-Declination.png

Also known as
The culmination of a celestial body is also known as its meridian transit, or just transit.

However, the term transit has another meaning in the astronomical context, and so culmination is preferred on.