how high does a satellite need to be to maintain orbit
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- High Earth Orbit. When a satellite reaches exactly 42,164 kilometers from the center of the Earth (about 36,000 kilometers from Earth’s surface), it enters a sort of “sweet spot” in which its orbit matches Earth’s rotation.his special, high Earth orbit is called geosynchronous. A satellite in a circular geosynchronous orbit directly over the equator (eccentricity and inclination at zero) will have a geostationary orbit that does not move at all relative to the ground. It is always directly over the same place on the Earth’s surface.
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Satellite Orbits Most of the satellites in medium earth orbit circle the earth at approximately 6,000 to 12,000 miles above the earth in an elliptical orbit around the poles of the earth. Any orbit that circles around the poles is referred to as a 'polar orbit'.atellites in this orbital range also have a very small 'footprint'--that is, the surface of the earth that can be covered by the signal broadcast from the satellite is small. Thus, lots of satellites (35 or more) are required to make worldwide communication possible.
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How long does it take for a satellite to reach GEO? SES-8 went to a supersynchronous transfer orbit, which allows for much lower δV to change the inclination, since the spacecraft is going so much slower at apogee. It would be 1800 m/s from GTO, but it's 1500 m/s from SSTO.
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Mathematics of Satellite Motion A satellite wishes to orbit the earth at a height of 100 km (approximately 60 miles) above the surface of the earth. Determine the speed, acceleration and orbital period of the satellite. (Given: M earth = 5.98 x 10 24 kg, R earth = 6.37 x 10 6 m).
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Earth observation satellite The Earth observation satellites ERS-1, ERS-2 and Envisat of European Space Agency as well as the MetOp spacecraft of EUMETSAT are all operated at altitudes of about 800 km.The Proba-1, Proba-2 and SMOS spacecraft of European Space Agency are observing the Earth from an altitude of about 700 km.To get (nearly) global coverage with a low orbit it must be a polar orbit or nearly so.he Proba-1, Proba-2 and SMOS spacecraft of European Space Agency are observing the Earth from an altitude of about 700 km. To get (nearly) global coverage with a low orbit it must be a polar orbit or nearly so.
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How many miles, near and far, do satellites orbit the earth from above? So, 165 km is about the lowest reasonable orbit. There are satellites orbiting at many altitudes up to 35,600 km, which is the height for geosynchronous orbits) and there have been satellites orbiting much higher (either for some scientific purpose or some accident).
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Sub-orbital spaceflight By one definition a sub-orbital spaceflight reaches an altitude higher than 100 km (62 mi) above sea level. This altitude, known as the Kármán line, was chosen by the Fédération Aéronautique Internationale because it is roughly the point where a vehicle flying fast enough to support itself with aerodynamic lift from the Earth's atmosphere would be flying faster than orbital speed.
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- The semi-synchronous orbit is a near-circular orbit (low eccentricity) 26,560 kilometers from the center of the Earth (about 20,200 kilometers above the surface). A satellite at this height takes 12 hours to complete an orbit. geostationary orbit is extremely valuable for weather monitoring because satellites in this orbit provide a constant view of the same surface area. When you log into your favorite weather web site and look at the satellite view of your hometown, the image you are seeing comes from a satellite in geostationary orbit.
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- However, the number of satellites has grown quickly, and as a result, the amount of orbital debris is growing rapidly. Because this debris is travelling at orbital speeds (7-8 km/s!), it poses a significant threat to the space shuttle, the International Space Station, and the many satellites in Earth orbit. Satellites and other objects placed in low-Earth orbit will remain in orbit for many years. How long depends upon their perigee altitude, but objects in orbits above about 700 km will stay in orbit for hundreds or even thousands of years!
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Geostationary Satellite Orbit, GEO Geostationary orbit basics. As the height of a satellite increases, so the time for the satellite to orbit increases. At a height of 35790 km, it takes 24 hours for the satellite to orbit.This type of orbit is known as a geosynchronous orbit, i.e. it is synchronized with the Earth.eostationary orbit basics. As the height of a satellite increases, so the time for the satellite to orbit increases. At a height of 35790 km, it takes 24 hours for the satellite to orbit.
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What is a Satellite? Most satellites also work in this zone. Geostationary orbit is the best spot for communications satellites to use, however. This is a zone above Earth's equator at an altitude of 35,786 km (22,236 mi).
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What Can Satellites Do? Even though there's a lot of room in space, satellites are launched into orbits at different distances from Earth. Some may be as close as 150 miles above Earth, while others may be as far away as 20,000 miles or more. Most artificial satellites orbit within 500 miles of Earth or what scientists call low-Earth orbit.
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Communications satellite Like LEOs, these satellites don’t maintain a stationary distance from the earth.This is in contrast to the geostationary orbit, where satellites are always approximately 22,300 miles from the earth. Typically the orbit of a medium earth orbit satellite is about 10,000 miles (16,093.44 km) above earth.In various patterns, these satellites make the trip around earth in anywhere from 2–12 hours, which provides better coverage to wider areas than that provided by LEOs.ow-Earth-orbiting satellites are less expensive to launch into orbit than geostationary satellites and, due to proximity to the ground, do not require as high signal strength (Recall that signal strength falls off as the square of the distance from the source, so the effect is dramatic) .
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Low Earth orbit The orbital velocity needed to maintain a stable low Earth orbit is about 7.8 km/s, but reduces with increased orbital altitude. Calculated for circular orbit of 200 km it is 7.79 km/s and for 1500 km it is 7.12 km/s.The delta-v needed to achieve low Earth orbit starts around 9.4 km/s.tmospheric and gravity drag associated with launch typically adds 1.5–2.0 km/s to the launch vehicle delta-v required to reach normal LEO orbital velocity of around 7.8 km/s (28,080 km/h). Equatorial low Earth orbits (ELEO) are a subset of LEO.
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What height does the International Space Station orbit around the Earth? The International Space Station is maintained in a near circular orbit with a minimum mean altitude of 278 km (173 mi) and a maximum of 460 km (286 mi). Atmospheric drag gradu…ally slows the station down and it moves closer to earth. The station must be periodically re-boosted.
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What height does the International Space Station orbit around the Earth? What height does the International Space Station orbit around the Earth? The International Space Station is maintained in a near circular orbit with a minimum mean altitude of 278 km (173 mi) and a maximum of 460 km (286 mi). Atmospheric drag gradu…ally slows the station down and it moves closer to earth. The station must be periodically re-boosted.
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Low Earth orbit The mean orbital velocity needed to maintain a stable low Earth orbit is about 7.8 km/s, but reduces with increased orbital altitude. Calculated for circular orbit of 200 km it is 7.79 km/s and for 1500 km it is 7.12 km/s. The delta-v needed to achieve low Earth orbit starts around 9.4 km/s.
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- Share to: The International Space Station is maintained in a near circular orbit with a minimum mean altitude of 278 km (173 mi) and a maximum of 460 km (286 mi).
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- Best Answer: A geostationary orbit requires that the satellite be in an orbit directly above the equator and approximately 22 236 miles (35,786 km) above sea level.This orbit puts the satellite in a position where it is always directly above the same spot on the planet at all times.f such a satellite's orbit lies over the equator, it is called a geostationary satellite. The orbits of the satellites are known as the geosynchronous orbit and geostationary orbit. Source(s): wikipedia encyclopedia. amby · 10 years ago.
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- To maintain orbit a satellite must travel at a speed of about  18,000 miles per hour to remain in orbit. Too much speed and the  orbit is broken and the craft will go into s … pace.ery easily. The GPS receiver measures how long it takes a certain   radio signal to travel from the GPS satellite(s) to itself, and from   that, the receiver calcu … lates the distance. It can do that because it   knows precisely how fast the radio signal travels.
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Ground track A satellite with an orbital inclination between zero and ninety degrees is said to be in what is called a direct or prograde orbit, meaning that it orbits in the same direction as the Earth's rotation. A satellite with an orbital inclination between 90 and 180 degrees is said to be in a retrograde orbit. satellite with an orbital inclination between zero and ninety degrees is said to be in what is called a direct or prograde orbit, meaning that it orbits in the same direction as the Earth's rotation. A satellite with an orbital inclination between 90 and 180 degrees is said to be in a retrograde orbit.
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- This type of orbit is ideal for many communications and weather satellites. A geostationary orbit has an altitude of 22,240 miles (35,790 km), which results in an orbital speed of 6,880 mph (11,070 km/h). We can also apply the same equation to the orbit of the Earth around the Sun.This orbit is also not a perfect circle, but is pretty close to get a good estimate of the Earth's orbital speed.his type of orbit is ideal for many communications and weather satellites. A geostationary orbit has an altitude of 22,240 miles (35,790 km), which results in an orbital speed of 6,880 mph (11,070 km/h). We can also apply the same equation to the orbit of the Earth around the Sun.
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- Inclination is the angle of the orbit in relation to Earth’s equator. A satellite that orbits directly above the equator has zero inclination. If a satellite orbits from the north pole (geographic, not magnetic) to the south pole, its inclination is 90 degrees.
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How Satellites Work You can also classify satellites based on their height above Earth's surface. Using this scheme, there are three categories [source: Riebeek 1  ]: Low-Earth orbits (LEO) — LEO satellites occupy a region of space from about 111 miles (180 kilometers) to 1,243 miles (2,000 kilometers) above Earth.olar-orbiting satellites also pass over the planet's poles on each revolution, although their orbits are far less elliptical. The polar orbit remains fixed in space as Earth rotates inside the orbit. As a result, much of Earth passes under a satellite in a polar orbit.
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- It should now be apparent that only satellites which orbit with a period equal to the earth's rotational period and with zero eccentricity and inclination can be geostationary satellites. As such, there is only one geostationary orbit—a belt circling the earth's equator at an altitude of roughly 35,786 kilometers.n general terms, it is a special orbit for which any satellite in that orbit will appear to hover stationary over a point on the earth's surface. Unlike all other classes of orbits, however, where there can be a family of orbits, there is only one geostationary orbit.
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- (NASA illustration by Robert Simmon). The height of the orbit, or distance between the satellite and Earth’s surface, determines how quickly the satellite moves around the Earth. An Earth-orbiting satellite’s motion is mostly controlled by Earth’s gravity.