Discussion on Non-Keplerian orbit

The conception of Non-Keplerian orbit was described and its applications were discussed. Firstly, as a direction the Keplerian Law was given which in fact as a very creative summarization of the observation results of planets, and it can describe the kinematical principle of planet motion. Then, the concept of Non-Keplerian orbit is given, which is the inevitable result of artificial satellite controllability. In succession, the typical problems of non-Keplerian orbit are described, including kinematical problem of spacecraft in single center gravitation field (viz. two-body problem) and in muilt-center gravitation field (viz. multi-body problem). The spiral climbing orbit and suspension orbit are studied as specific case. Finally, the applications of non-Keplerian orbit were put forward, including problem of kinetic energy interception, satellite formation and reconfiguration, optimal maneuvering of system integrated configuration.