Classical Mechanics - Central Forces : Geostationary Satellites / Artificial Satellites
If the height of an artificial satellite at equator above the earth’s surface is such that its period of revolution is exactly equal to the period of rotation of the earth, then the satellite would appear stationary over a point on the earth’s equator. Such a satellite is called Geostationary Satellite and its orbit is called Geostationary Orbit or Parking Orbit. For a geostationary satellite we must have the orbit to be geosynchronous, circular and to stay over the geographical equator of the earth. The radius of the orbit and its height have been calculated here.