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azimuth

/ˈazɪməθ/
noun
The direction of a celestial object from the observer, expressed as the angular distance from the north or south point of the horizon to the point at which a vertical circle passing through the object intersects the horizon.

Origin
from Arabic as-samt

Isaac Asimov explained how to set a telescope precisely using azimuth and altitude angles. Asimov made it easy. (In spite of that, nobody called him Isaac Azimuth.)