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In astrodynamics a central body () is a body that is being orbited by orbiting body(). Under standard assumptions in astrodynamics:

it is orders of magnitude heavier than orbiting body (i.e. ),
it is a center of an inertial frame of reference for orbiting body,
it is in the focus (or one of the two) of the orbiting body's orbit.

See also

Astrodynamics Celestial mechanics

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