What is synchronous orbit?
Stationary orbit around the Earth is called geostationary orbit or Clarke orbit (after science and science fiction writer Sir Arthur C. Clarke). Such an orbit is frequently used for communications satellites, since it results in the satellite appearing to be fixed in the sky so that ground antennas do not need to move to track it. A geostationary orbit is about 22,240 miles (35,800 km) above the equator.