Gravitation (8 of 17) Geosynchronous and Geostationary Orbits

Explains the difference between geosynchronous and geostationary orbits. Shows how to calculate the height above the Earth's surface needed to achieve a geosynchronous orbit.

A geosynchronous orbit is an orbit around the Earth for a satellite so that the orbital period of the satellite matches the time it takes for Earth to rotate once about its axis. This is a time equal one sidereal day, about 23 hours, 56 minutes, and 4 seconds. This means that for an observer on Earth's surface, a satellite in geosynchronous orbit will return to the exact the same position in the sky after a time of one sidereal day. A special case of geosynchronous orbit is the geostationary orbit, which is a circular geosynchronous orbit directly above the Equator. A satellite in a geostationary orbit appears stationary above the surface of the Earth and is always appears at the same point in the sky.

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Видео Gravitation (8 of 17) Geosynchronous and Geostationary Orbits канала Brian Swarthout