parallactic motion
nounAstronomy.
the apparent motion of stars due to the earth's orbital motion.
Origin of parallactic motion
1First 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 CharlierIf we ascertain the parallactic motion of a group of stars, then we can find their average distance.
Astronomy | David Todd
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