parallactic motion


nounAstronomy.
  1. the apparent motion of stars due to the earth's orbital motion.

Origin of parallactic motion

1
First recorded in 1885–90

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use parallactic motion in a sentence

  • The most obvious and direct method is to determine the parallactic motion of the stars of known parallax.

  • From the parallactic motion of the star it is possible to deduce its distance from the sun, or its parallax.

    Lectures on Stellar Statistics | Carl Vilhelm Ludvig Charlier
  • If we ascertain the parallactic motion of a group of stars, then we can find their average distance.

    Astronomy | David Todd