planetary perturbation

planetary perturbation

[′plan·ə‚ter·ē ‚pər·tə′bā·shən]
(astronomy)
A deviation of a planet from its computed orbit because of the attraction of another celestial body or bodies.
References in periodicals archive ?
These movements are the result of a multitude of forces acting on our planet, some of which are external (such as astronomical, luni-solar forces and planetary perturbations), and some internal (geochemical and geophysical processes).
Planetary Perturbations and the Orbits of Small Bodies
It calculates high-precision ephemerides that include planetary perturbations for the 1,083 asteroids that reach magnitude 14.5.

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