Perturbations definitions

Perturbations

The disturbances in the orbit of a celestial object produced by the gravitational effects of other bodies.
Found on http://www.encyclo.co.uk/local/20448

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Perturbations

The disturbances in the orbit of a celestial object caused by the gravitational pull of another object.
Found on https://www.encyclo.co.uk/local/22784

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