An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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diurnal aberration
  بیراهش ِ روزانه  
birâheš-e ruzâné
Fr.: aberration diurne  

The aberration of a star’s position due to the rotation of the Earth. Its value depends on the latitude of the observer, and is only 0’’.32 in the case of an observer at the equator, where the rotational velocity is greatest.

See also: → diurnal; → aberration.