cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull; "The orbits of these stars were perturbed by the passings of a comet"

To cause a celestial body, to deviate from its predicted orbit, usually under the gravitational influence of another celestial object.

To cause a planet or satellite to deviate from a theoretically regular orbital motion.

To disturb; to agitate; to vex; to trouble; to disquiet.

disturb in mind or make uneasy or cause to be worried or alarmed; "She was rather perturbed by the news that her father was seriously ill"

disturb or interfere with the usual path of an electron or atom; "The electrons were perturbed by the passing ion"

To disorder; to confuse.

throw into great confusion or disorder; "Fundamental Islamicists threaten to perturb the social order in Algeria and Egypt"