Satellite orbit
Types of orbit ... Upon launch, a satellite or spacecraft is most often placed in one of several particular orbits around Earth – or it might be sent on an ... ,Sun-synchronous orbit: An orbit which combines altitude and inclination in such a way that the satellite passes over any given point of the planets's surface at ... ,The mean orbital velocity needed to maintain a stable low Earth orbit is about 7.8 km/s (28,000 km/h; 17,000 mph), but reduces with increased orbital altitude. ,A geostationary orbit, also referred to as a geosynchronous equatorial orbit (GEO), is a circular geosynchronous orbit 35,786 kilometres (22,236 miles) in ... ,Pseudo-orbit classifications — Approximately 63% of operational satellites are in low Earth orbit, 6% are in medium-Earth orbit (at 20,000 km), 29% are in ... ,A geocentric orbit or Earth orbit involves any object orbiting the Earth, such as the Moon or artificial satellites. In 1997 NASA estimated there were ... ,2009年9月4日 — Satellites in geostationary orbit rotate with the Earth directly above the equator, continuously staying above the same spot. This position ... ,Satellite map shows current position and trajectory of over 19300 satellites orbiting the Earth. View satellites by country, type, size, launch date, orbit ... ,Which countries have earth-observing satellites? When was the oldest working satellite launched? At what altitudes do most satellites orbit?
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 Satellite orbit 相關參考資料
Types of orbits - ESA
Types of orbit ... Upon launch, a satellite or spacecraft is most often placed in one of several particular orbits around Earth – or it might be sent on an ... https://www.esa.int List of orbits - Wikipedia
Sun-synchronous orbit: An orbit which combines altitude and inclination in such a way that the satellite passes over any given point of the planets's surface at ... https://en.wikipedia.org Low Earth orbit - Wikipedia
The mean orbital velocity needed to maintain a stable low Earth orbit is about 7.8 km/s (28,000 km/h; 17,000 mph), but reduces with increased orbital altitude. https://en.wikipedia.org Satellites in geostationary orbit - Wikipedia
A geostationary orbit, also referred to as a geosynchronous equatorial orbit (GEO), is a circular geosynchronous orbit 35,786 kilometres (22,236 miles) in ... https://en.wikipedia.org Satellite - Wikipedia
Pseudo-orbit classifications — Approximately 63% of operational satellites are in low Earth orbit, 6% are in medium-Earth orbit (at 20,000 km), 29% are in ... https://en.wikipedia.org Geocentric orbit - Wikipedia
A geocentric orbit or Earth orbit involves any object orbiting the Earth, such as the Moon or artificial satellites. In 1997 NASA estimated there were ... https://en.wikipedia.org Catalog of Earth Satellite Orbits - NASA Earth Observatory
2009年9月4日 — Satellites in geostationary orbit rotate with the Earth directly above the equator, continuously staying above the same spot. This position ... https://earthobservatory.nasa. Satellite Map | Space Map Shows 19K+ Satellites Orbiting Earth
Satellite map shows current position and trajectory of over 19300 satellites orbiting the Earth. View satellites by country, type, size, launch date, orbit ... https://maps.esri.com Satellite Database | Union of Concerned Scientists
Which countries have earth-observing satellites? When was the oldest working satellite launched? At what altitudes do most satellites orbit? https://www.ucsusa.org |