An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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commensurate orbits
  مدارها‌ی ِ هم مسا  
madârhâ-ye hammasâ
Fr.: orbites commensurables  

Of two bodies orbiting around a common barycenter, when the orbital period of one is an exact fraction, for example one-half or two-thirds, of the other.

See also: → commensurate; → orbit.