For a body orbiting the Sun or a planet, the gravitational effect of a third body (e g ,another planet) on its orbit, usually resulting in small changes or periodic fluctuations [For comets, outgassing near the sun may also act on its orbit ]
A disturbance in the regular elliptic or other motion of a heavenly body, produced by some force additional to that which causes its regular motion; as, the perturbations of the planets are caused by their attraction on each other
1 Any departure introduced into an assumed steady state of a system, or a small departure from a nominal path such as a desired trajectory Usually used as equivalent to small perturbation
A forced change to a system This can result in a sudden shift to a new state, an immediate return to the old state or a long transient resulting in one or the other
A method of reducing degeneracy by adding or subtracting small tolerances to costs, matrix elements, right-hand side elements, or bounds
To disrupt greatly; to agitate Variation in a designated orbit, as of an electron or planet, resulting from the influence of one or more external bodies
A perturbation is a small change in the movement, quality, or behaviour of something, especially an unusual change. perturbations in Jupiter's gravitational field
The deviation of an orbiting object from its path around a center of farce caused by the action of an additional center of force