North polar distance

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Related to North polar distance: North Polar Region
(Astron.) the distance on the heavens of a heavenly body from the north pole. It is the complement of the declination.

See also: Distance

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Caroline, in her early 70s, arranged the nebulae William had spotted in his sweeps into zones of north polar distance and then in order of right ascension--just as she had arranged the reference stars decades before.

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