Declination

In space and astronautical engineering, declination refers to the angular distance of a celestial body from the celestial equator. It is measured in degrees and is used to determine the position of a celestial object in the sky. Declination is an important concept in space navigation and is used to calculate the position of spacecraft and satellites in orbit around the Earth or other celestial bodies. It is also used in the design and operation of telescopes and other astronomical instruments.
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