An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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dynamical parallax
  دیدگشت ِ توانیک  
didgašt-e tavânik
Fr.: parallaxe dynamique  

A method for deriving the distance to a binary star. The angular diameter of the orbit of the stars around each other and their apparent brightness are observed. By applying Kepler’s laws and the mass-luminosity relation, the distance of the binary star can be calculated.

See also: → dynamical; → parallax.