A geosynchronous satellite completes one orbit around the earth in the same time that it takes the earth to make one rotation in inertial (or fixed) space. This time period is known as one sidereal day and is equivalent to 23 h 56 m 04 s of mean solar time (for more information, see "Orbital Coordinate Systems, Part I" in the September/October ... b) Calculate the height at which the satellite orbits above the surface of the Earth. The radius of the Earth is 6400km and its mass is 6x10^24 kg. a) A geostationary orbit is when the satellite remains vertically above the same point on the equator at all all times and consequently has an orbital period of 24 hours.
The average m/A for an orbital object is around 100 kg m-2 with most objects lying between 50 and 200 kg m-2. This equates to A/m values between 0.005 and 0.02, with an average value of 0.01 m 2 kg-1. The air density varies along the orbit, being a function of latitude and longitude, time of day, time of year and season. Approximately 63% of operational satellites are in low Earth orbit, 6% are in medium-Earth orbit (at 20,000 km), 29% are in geostationary orbit (at 36,000 km) and the remaining 2% are in various elliptical orbits. In terms of countries with the most satellites the USA significantly leads the way with 859 satellites, China is second with 250 ...
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