A graveyard orbit is an orbit where spacecraft are intentionally placed at the end of their operational life. It is a measure performed in order to lower the probability of collisions with operational spacecraft and of the generation of additional space debris. It is used when the delta-v required to perform a de-orbit maneuver would be too high. De-orbiting a geostationary satellite would require a delta-v of about 1,500 m/s while re-orbiting it to a graveyard orbit would require about 11 m/s. In physics, an orbit is the path that an object makes, around another object, whilst under the influence of a source of centripetal force, such as gravity. ... Space debris or orbital debris, also called space junk, are the objects in orbit around Earth created by man that no longer serve any useful purpose. ... General In general physics delta-v is simply the change in velocity. ... A geosynchronous satellite is a satellite whose orbital speed equals the Earths rotational speed. ... General In general physics delta-v is simply the change in velocity. ...

For satellites in a geostationary orbit the graveyard orbit would be few hundred kilometers above the operational orbit. The transfer to graveyard orbit above geostationary orbit however requires the same amount of fuel that a satellite needs for approximately 3 months of stationkeeping. It also requires a reliable attitude control during the transfer maneuver. While most satellite operators try to perform such a maneuver at the end of the operational life only one third succeed in doing so. A geostationary orbit (abbreviated GEO) is a circular orbit directly above the Earths equator (0º latitude). ... A geostationary orbit (abbreviated GEO) is a circular orbit directly above the Earths equator (0º latitude). ... In astrodynamics orbital stationkeeping is a term used to descibe a particular set of orbital maneuvers used to keep a spacecraft in assigned orbit, either low earth orbit (LEO), or geostationary orbit (GEO). ... In the context of spacecraft, attitude control is control of the angular position and rotation of the spacecraft, either relative to the object that it is orbiting, or relative to the celestial sphere. ...

According to the Inter-Agency Space Debris Coordination Committee (IADC) [1] the minimum perigee altitude above the geostationary orbit should be: A geostationary orbit (abbreviated GEO) is a circular orbit directly above the Earths equator (0º latitude). ...

where is the solar radiation pressure coefficient and is the aspect area to mass ratio of the satellite. This formula includes about 200 km for the GEO protected zone to also permit orbit maneuvers in GEO without interference with the graveyard orbit. 35 km have to be foreseen to consider the effects of gravitational perturbations. The remaining part of the equation considers the effects of the solar radiation pressure which depend on the physical parameters of the satellite.