azimuth


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The measurement, usually in degrees, of an object's apparent angular separation from north. An object that lies due north has an azimuth of 0 degrees, an object that lies due east has an azimuth of 90 degrees, one that lies due south has an azimuth of 180 degrees, and one that lies due west has an azimuth of 270 degrees. Altitude and azimuth together are one of several types of coordinate systems that astronomers use to locate astronomical objects in the sky.