parallactic displacement

parallactic displacement

[¦par·ə¦lak·tik di′splās·mənt]
(astronomy)
The apparent changes in the position of a star due to changes in the position of the earth as it moves around the sun. Also known as parallactic shift.
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References in periodicals archive ?
If the Earth did indeed move about the Sun, that should induce a parallactic displacement among the nearer stars as compared with the farther ones.
Aberration of light
Since the Earth moves around the Sun, the nearer stars should show a parallactic displacement compared with the farther ones.
Distance of stars

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