polar distance


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Related to polar distance: meridian angle, Sidereal Hour Angle, Polar map

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

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.
References in periodicals archive ?
We believe that the volume and the polarity of solvent molecules are two important factors that effected swelling capability of hydrogel, since the polar distance for 1,2-glycol, methanol, ethanol, 1-propanol, and 1,4-butanediol molecule is 7.
Hydrogel has lower swelling value in the electrolyte solution with higher ionic intensity, or in the mixture solution of water and the organic solvent with larger molecular volume and polar distance [4].
The polar distance should have decreased while the equatorial distance should have increased.
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.
Unfortunately, Sir John left us with what he admitted was only a rough polar distance (90[degrees] minus the declination) for these three, perhaps accurate to the nearest degree.