人造地球卫星绕地球运动的轨道如何？其运动轨道与什么因素有关？本文将从分析人造地球卫星的受力情况出发，导出解人造地球卫星问题的基本方程，然后求出其轨道方程，最后讨论它做各种轨道运动的条件。为抓住主要问题，设卫星绕地球运动时，只受地球对它的万有引力作用，忽略 How about man-made orbit around the earth orbit? What is the movement track and what factors? Based on the analysis of the force conditions of artificial Earth satellites, this paper derives the basic equation for the problem of man-made earth satellites and then derives its orbital equation. Finally, it discusses the conditions under which it can make orbital movements. In order to seize the main issue, suppose the satellite moves around the earth only by the universal gravitation of the Earth on it, ignoring