An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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parallactic ellipse
  بیضی ِ دیدگشت  
beyzi-ye didgašt
Fr.: ellipse de parallaxe  

The path on the sky of the apparent position of a star as seen from the Earth, due to the Earth’s annual motion around the Sun.

See also: → parallactic; → ellipse.