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Azimuth a clockwise arc of the horizon measured from a fixed point (usually true north) to the intersection of a vertical circle that arises from the horizon and passes through the center of an object (usually elevated in the sky). Azimuth is measured in degrees. The sun would have an azimuth of 0f 90 degrees if it rises on a morning when it is due east. As it rises, its elevation would increase and its azimuth would increase. As the sun sets its elevation would decrease and its azimuth would continue to increase.

Elevation is the amount of degrees above the horizon. An object on the horizon has zero degree elevation.

Zenith is the highest point that a celestial object reaches as it is observed in the sky.


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