几个天体围绕同一个中心天体运动或同一个天体绕同一个中心天体在不同轨道上运动,其运动参量的对比问题往往成为学生的认知障碍,理清其中运动学、动力学规律,应用能量的观点可以准确的认知.本文就天体的相互追及、不同天体运动参量的对比、以及变轨过程中的运动参量的变化问题通过例题进行详解,以期得出解决这类问题的一般方法.一、卫(或行)星中的追及问题 Several celestial bodies around the same central celestial movement or the same celestial body around a same central celestial body in different orbits, the comparison of their movement parameters often become students cognitive disorders, to sort out the kinematics, dynamics, application of energy Of the point of view can be accurately recognized.This article on the mutual pursuit of celestial bodies, the comparison of different celestial body motion parameters, as well as changes in the process of orbital parameters of the movement through examples to explain in detail, in order to come to a general solution to such problems. , Wei (or line) stars in the chase and problem