How Are Satellite Orbits Predicted?
Special satellite software, available for personal computers, predicts satellite orbits. The software uses Keplerian data to forecast each orbit and shows when a satellite will be overhead. The latest “Keps” are available on the Internet for amateur radio satellites, too. Satellites use a variety of light-sensitive sensors to determine their position. The satellite transmits its position to the ground station. Original information courtesy of HowStuffWorks.