An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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horizon coordinate system
  راژمان ِ هم‌آراهای ِ افقی  
râžmân-e hamârâhâ-ye ofoqi
Fr.: coordonnées horizontales  

The coordinate system based on the position of the observer. The horizontal plane is the fundamental plane and the coordinates are
→ altitude and → azimuth.

See also: → horizon; → coordinate; → system.