Altitude and Azimuth

We use altitude and azimuth to describe the location of an object in the sky as viewed from a particular location at a particular time.

The altitude is the distance an object appears to be above the horizon. The angle is measured up from the closest point on the horizon.

The azimuth of an object is the angular distance along the horizon to the location of the object. By convention, azimuth is measured from north towards the east along the horizon

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