parallactic motion

parallactic motion

See parallax.

Parallactic Motion

 

the apparent motion of a star on the celestial sphere as a result of the motion of the solar system relative to the star. A part of the star’s proper motion, the parallactic motion is directed toward the antapex, the point on the celestial sphere directly opposite the apex of the sun’s way, that is, the point toward which the sun is moving.

parallactic motion

[¦par·ə¦lak·tik ′mō·shən]
(astronomy)
An apparent motion of stars away from the point in the celestial sphere toward which the sun is moving.
References in periodicals archive ?
Parallactic motion is the way nearby stars appear to move in an annual, repeatable pattern relative to much more distant stars, simply because the observer on Earth is circling the Sun and sees these stars from different places over the year.
The team plans to use parallactic motion again in the future.