An Etymological Dictionary of Astronomy and Astrophysics

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precessional circle

پرهون ِ پیشایانی

parhun-e pišâyâni

Fr.: circle précessionnel

The path of either → celestial poles around the → ecliptic pole due to the → precession of equinox. It takes about 26,000 years for the celestial pole to complete path.

An Etymological Dictionary of Astronomy and Astrophysics
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