geostationary
Geostationary refers to a specific type of Earth-centered orbit in which a satellite moves in a circular path around the equator with an orbital period that matches the Earth's rotation. In a true geostationary orbit, the satellite remains fixed over a single longitude on the equator, so its appearance in the sky does not change and it provides continuous coverage to the area directly beneath.
The geostationary orbit lies at an altitude of about 35,786 kilometers (22,236 miles) above the equator. The
Geostationary orbits are especially valued for communications and weather satellites, because a single GEO satellite can
The concept was proposed by Arthur C. Clarke in 1945, and the first successful geostationary satellite, Syncom