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Communication satellites are one of the most important integral parts of most major wide-area telecommunication networks throughout the world. We are concerned in our study with different types of communication satellites such as Molniya and Geostationary satellites. We study the properties of these communication satellites' orbits, and the forces acting on their orbit regions, with special emphasis of the effect of the Earth's oblateness, solar radiation pressure, and luni-solar perturbations. Also, the ground track of a satellite in these orbits and the advantages and disadvantages of each...