to be 24 hours. They are quite often used for communications or weather forecasting. r
Geostationary satellites and communications Geostationary satellites are positioned at an exact height above the Earth (about 36 000 km). At this height they rotate around the Earth at the same speed as the Earth rotates around its axis, so in effect remaining stationary above a point on the Earth (normally directly over the equator). It should be clear from Kepler’s third law that T 2
R3 since G,M and are all constant.Thus, by fixing the radius of orbit, R, the periodic time, T, can be made
Milstar US government satellite communications system which provides secure, jam-resistant,worldwide communications to meet wartime requirements for United States military users
