The Federal Communications Commission last year gave SpaceX permission to deploy 11,943 low-Earth orbit satellites for the planned Starlink system. The Low Earth Orbit, LEO is used for the vast majority of satellites. The use of moderate to high volatility silicones in low Earth orbit has resulted in a silicone contamination arrival at surfaces which are simultaneously being bombarded with atomic oxygen, thus leading to conversion of the silicone contaminant to silica. Satellites of this type orbit higher than low earth orbit (LEO) satellites, but lower than geostationary satellites.
Astronauts Pete Conrad and Richard Gordon spent 3 days in low-Earth orbit completing 44 orbits of the Earth. Gemini XI was a NASA mission flown in 1966. However, the average impact speed of orbital debris with another space object will be approximately 6 miles per second (10 km/s). The spacecraft flew an elliptical orbit, with an altitude of 300 km as its closest point to Earth, and 1,350 km at its highest. Low Earth orbit Low Earth orbit (LEO) A low Earth orbit (LEO) is, as the name suggests, an orbit that is relatively close to Earth’s surface. LEO basics. MEO satellite (medium earth orbit satellite): A medium earth orbit (MEO) satellite is one with an orbit within the range from a few hundred miles to a few thousand miles above the earth's surface. In low Earth orbit (below 1,250 miles, or 2,000 km), orbital debris circle the Earth at speeds of between 4 and 5 miles per second (7 to 8 km/s). 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… The Dragon low-Earth orbit spaceflight will fly a similar mission profile to the Gemini XI mission. Its main objectives are to understand the effects of high-density atomic oxygen on the satellite and to verify the possibility of orbit control using an ion engine system. Medium Earth orbit (MEO), sometimes called intermediate circular orbit (ICO), is the region of space around Earth above low Earth orbit (altitude of 2,000 km (1,243 mi) above sea level) and below geosynchronous orbit (altitude of 35,786 km (22,236 mi) above sea level)..
Consequently, collisions with even a small piece of debris will involve considerable energy. SLATS (Super Low Altitude Test Satellite) SLATS is a technology demonstration minisatellite of JAXA to orbit the Earth at an altitudes in the range of 180-250 km. As the names imply, Low Earth Orbit is relatively low in altitude; the definition of LEO stating that the altitude range is between 200 and 1200 km above the Earth's surface.