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]> Orbital altitudes of many significant satellites of Earth 0 km / mi â Sea level 37.6 km / 23.4 mi â Self-propelled jet aircraft flight ceiling (Record set in 1977) 215 km / 133.6 mi â Sputnik-1, the first artificial satellite of Earth 340 km / 211.3 mi â International Space Station 390 km / 242.3 mi â Former Russian space station Mir 595 km / 369.7 mi â Hubble Space Telescope [700â1700 km] â Polar-orbiting satellites [435â1056 mi] 2000 km / 1243.7 mi LEO zone (Low Earth orbit) MEO zone (Medium Earth orbit) HEO zone (High Earth orbit) 600â800 km / 372.8â497.1 mi â Sun-synchronous satellites These satellites orbit the Earth in nearly exact polar orbits north to south. They cross the equator multiple times per day, and each time they are at the same angle with respect to the Sun. Satellites on these types of orbits are particularly useful for capturing images of the Earthâs surface or images of the Sun. 20â¯350 km GPS (Global Positioning System) satellites These satellites are on a semi-synchronous orbit (SSO), meaning that they orbit the Earth in exactly 12 hours (twice per day). 35â¯786 km Geosynchronous (GEO) and geostationary (GSO) satellites. Geosynchronous satellites orbit the Earth at the same rate that the Earth rotates. Thus they remain stationary over a single line of longitude. A geostationary satellite remains in a fixed location as observed from the surface of the Earth, allowing a satellite dish to be alligned to it. This particular altitude marks the border between the MEO and HEO zones. MEO zone (Medium Earth orbit) HEO zone (High Earth orbit) LEO zone (Low Earth orbit) 384â¯000 km The Moon Scale: 20â¯000 km / 12â¯437.4 mi Scale: 2000 km / 1243.7 mi
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