Symbols:H/Celestial Altitude

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Celestial Altitude

$h$


Let $X$ be a point on the celestial sphere.

The (celestial) altitude of $X$ is defined as the angle subtended by the the arc of the vertical circle through $X$ between the celestial horizon and $X$ itself.


It is usually denoted by $h$.


Also denoted by

The celestial altitude is also seen denoted by $a$.


Sources