An Etymological Dictionary of Astronomy and Astrophysics

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heliocentric parallax
  دیدگشت ِ هورمرکزی  
didgašt-e hurmarkazi
Fr.: parallaxe héliocentrique  

The parallax of a celestial body when viewed from two points in the Earth’s orbit around the Sun. More specifically, the angular difference in a celestial object’s position as seen from the center of the Sun and the center of the Earth. Also called → annual parallax.

See also: → heliocentric; → parallax.