declination science definition
- On the celestial sphere, the position of a celestial object north or south of the celestial equator . Declination is measured in degrees along a great circle drawn through the object being measured and the north and south celestial poles, with positive values north of the celestial equator and negative values south of it, so that the equator itself is 0° and the north and south celestial poles are +90° and -90° declination respectively. See more at equatorial coordinate system.
- See magnetic declination.
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