Geosynchronous Orbit (GSO)
Definition
Geosynchronous orbit synchronizes with the rotation of the Earth and has an orbital period that matches one sidereal day (23 hours, 56 minutes, and 4 seconds). GSO satellites are placed at an altitude of approximately 35,786 km (22,236.39 miles) and have a period of revolution that is equal to the period of rotation of the Earth around its axis. Telecommunications satellites —particularly broadcast TV and low-speed data communication— are commonly found in this orbit. Similarly, weather satellites can also be found in this orbit. GEO orbit is a specific type of GSO that lies on the same plane as the equator. In other GSOs, satellites can have any inclination.
A Lexicon for Outer Space SecurityUnited Nations Institute for
Disarmament ResearchPalais des Nations
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