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... > Observational astronomy > Astronomical techniques > Astrometry > Astronomical coordinate systems > Ecliptic coordinate system > Ecliptic poles

Preferred term

Ecliptic poles  

Definition

  • Either of the two points on the celestial sphere that are 90° above and below the plane of ecliptic. The north ecliptic pole lies in Draco, and the south ecliptic pole in Dorado. Due to precession, the celestial pole moves in a circle around the ecliptic poles once every 25,800 years. (en)

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Editorial note

URI

http://astrothesaurus.org/uat/448

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