Geostatik park yörüngesi Nedir?
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Geostatik park yörüngesi Nedir?
A geostationary orbit, also referred to as a GEO or GSO, is a circular geosynchronous orbit 35,786 km (22,236 mi) in altitude above Earth’s equator, 42,164 km (26,199 mi) in radius from Earth’s center, and following the direction of Earth’s rotation.
An object in such an orbit has an orbital period equal to Earth’s rotational period, one sidereal day, and so to ground observers it appears motionless, in a fixed position in the sky. The concept of a geostationary orbit was popularised by the science fiction writer Arthur C. Clarke in the 1940s as a way to revolutionise telecommunications, and the first satellite to be placed in this kind of orbit was launched in 1963.
Communications satellites are often placed in a geostationary orbit so that Earth-based satellite antennas do not have to rotate to track them but can be pointed permanently at the position in the sky where the satellites are located. Weather satellites are also placed in this orbit for real-time monitoring and data collection, as are navigation satellites in order to provide a known calibration point and enhance GPS accuracy.
Geostationary satellites are launched via a temporary orbit, and then placed in a “slot” above a particular point on the Earth’s surface. The satellite requires periodic station-keeping to maintain its position. Modern retired geostationary satellites are placed in a higher graveyard orbit to avoid collisions.
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