Medium Earth Orbit (MEO) spans the region between approximately 2,000 km and 35,786 km altitude. It is best known as the home of global navigation satellite systems: GPS orbits at roughly 20,200 km, Galileo at 23,222 km, and GLONASS at 19,100 km. The orbital periods in MEO range from about 2 to 24 hours.
MEO provides a balance between the coverage area of higher orbits and the signal strength of lower ones. Some next-generation broadband constellations, such as O3b mPOWER, operate in MEO to offer lower latency than GEO while requiring fewer satellites than a LEO constellation.