parallactic orbit

parallactic orbit
noun
: the orbit in which a star appears to move once round each year owing to the earth's orbital motion round the sun

Useful english dictionary. 2012.

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  • Parallax —    The apparent displacement of the position of a celestial object on the celestial sphere when seen from two different places. The Diurnal Parallax is the parallactic shift of a celestial object when seen from two points that are one Earth… …   The writer's dictionary of science fiction, fantasy, horror and mythology

  • Bradley, James — ▪ English astronomer born March 1693, Sherborne, Gloucestershire, Eng. died July 13, 1762, Chalford, Gloucestershire  English astronomer who in 1728 announced his discovery of the aberration of starlight, an apparent slight change in the… …   Universalium

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