Geostationary orbit

Circular orbit above Earth's Equator and following the direction of Earth's rotation
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Past and current navigation systems that use geostationary satellites include:

A computer-generated image of space debris. Two debris fields are shown: around geostationary space and low Earth orbit.

The magnitude of the acceleration, a, of a body moving in a circle is given by:

The orbital speed is calculated by multiplying the angular speed by the orbital radius: