Ecliptic pole

The ecliptic pole is the point on the celestial sphere where the sphere meets the imaginary line perpendicular to the ecliptic plane, the path the Earth travels on its orbit around the Sun.

There are two ecliptic poles:

Due to precession, the celestial pole moves in a circle around the ecliptic poles once every 25,800 years.

单词	North Ecliptic Pole
释义	North Ecliptic Pole 英语百科 Ecliptic pole The ecliptic pole is the point on the celestial sphere where the sphere meets the imaginary line perpendicular to the ecliptic plane, the path the Earth travels on its orbit around the Sun. There are two ecliptic poles: Due to precession, the celestial pole moves in a circle around the ecliptic poles once every 25,800 years.
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North Ecliptic Pole

Ecliptic pole