An Etymological Dictionary of Astronomy and Astrophysics

English-French-Persian

فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

Homepage  Preliminaries  Abbreviations  Acknowledgments  References 
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
retrograde motion
  جنبش ِ پسرو  
jonbeš-e pasrow
Fr.: mouvement rétrograde  

The orbital motion or rotation of a solar system body in a clockwise direction (East to West) when viewed from the north pole of the ecliptic. It is a motion
opposed to the → direct motion of the great majority of solar system bodies.

See also: → retrograde; → motion.