Low Earth orbit - Wikipedia
A low Earth orbit (LEO) is an orbit around Earth with a period of 128 minutes or less (making at least 11.25 orbits per day) and an eccentricity less than 0.25. [1]
Low Earth orbit (LEO) | Definition, Distance, & Facts | Britannica
2 天之前 · Low Earth orbit (LEO), region of space where satellites orbit closest to Earth’s surface. There is no official definition of this region, but it is usually considered to be between 160 and 1,600 km (about 100 and 1,000 miles) above Earth.
Low Earth Orbit Visualization | LeoLabs
A visualization of satellites, debris, and other objects tracked by LeoLabs in low earth orbit.
What is low Earth orbit? | Space
2022年5月30日 · In very simple terms, low Earth orbit (LEO) is exactly what it sounds like: An orbit around the Earth with an altitude that lies towards the lower end of the range of possible orbits.
Observing our Planet from Low Earth Orbit - NASA
2022年7月24日 · Station provides a low Earth orbit vantage point for photos supporting global-scale investigations related to the composition, health, and future of Earth.
Commercial Space Frequently Asked Questions - NASA
2024年4月7日 · What is LEO (low Earth orbit)? Low Earth orbit (LEO) encompasses Earth-centered orbits with an altitude of 1,200 miles (2,000 km) or less. This orbit is considered near enough to Earth for convenient transportation, communication, observation, and resupply.
Catalog of Earth Satellite Orbits - NASA Earth Observatory
Most scientific satellites, including NASA’s Earth Observing System fleet, have a low Earth orbit. One way of classifying orbits is by altitude. Low Earth orbit starts just above the top of the atmosphere, while high Earth orbit begins about one tenth of the way to the moon.
ESA - Low Earth orbit - European Space Agency
2020年3月2日 · A low Earth orbit (LEO) is, as the name suggests, an orbit that is relatively close to Earth’s surface. It is normally at an altitude of less than 1000 km but could be as low as 160 km above Earth – which is low compared to other orbits, but still very far above Earth’s surface.
What Is Low Earth Orbit? A Basic Explainer - ExtremeTech
2024年11月3日 · An object is said to be in low Earth orbit if it completes a revolution every 128 minutes or less. A 128-minute orbit, according to Kepler's third law, works out to a semi-major axis of 8,413...
What's So Special About Low Earth Orbit? - WIRED
2015年9月15日 · Just about all of our human exploration of space has been in low Earth orbit, but what exactly is it and why is it special?
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