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... > Observational astronomy > Astronomical techniques > Astrometry > Astronomical coordinate systems > Equatorial coordinate system > Celestial poles > North celestial pole

Preferred term

North celestial pole  

Definition

  • The point in the northern hemisphere where the rotation axis of Earth touches the celestial sphere. The star Polaris, also called the Pole Star, is located very near this point, at an angular separation of 42 arcminutes (about 1.4 lunar diameters). (en)

Broader concept

Entry terms

  • N.C.P. (en)
  • NCP (en)

Contributor

Editorial note

URI

http://astrothesaurus.org/uat/1123

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