ANSWERS: 1
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A geosynchronous orbit has the same period as the earth's rotation; it does not have specific altitude requirements. A geostationary orbit, which is a fixed type of geosynchronous orbit, must follow the equator, maintain an altitude of 22,236 miles and move at 6,876 mph to remain in sync with the Earth's rotation. It must also maintain an orbital circumference of 164,582 miles.
Source:
U.S. Centenial of Flight Commission
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