An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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true equinox
  هموگان ِ راستین  
hamugân-e râstin
Fr.: équinoxe vrai  

The intersection of the → ecliptic with the → true celestial equator for a given epoch. It is derived from the → mean equinox accounting for the → nutation.

See also: → true; → equinox.