# polar distance

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## polar distance

*Short for*north polar distance or south polar distance.

## Polar Distance

one of the coordinates in the equatorial celestial coordinate system. The polar distance *p* is equal to the arc of the hour circle from the north celestial pole to the celestial body and is related to the declination δ by the equation *p =* 90°- δ.

## polar distance

[′pō·lər ′dis·təns] (astronomy)

Angular distance from a celestial pole; the arc of an hour circle between a celestial pole, usually the elevated pole, and a point on the celestial sphere, measured from the celestial pole through 180°.

## polar distance

The angular distance from a celestial pole. The polar distance of any celestial body is equal to 90° minus the declination of the body.