A New Trajectory Propagation Program for DSPSE Mission Support

A satellite trajectory propagation program called N-Body is being developed to support the upcoming Deep Space Program Science Experiment (DSPSE) mission which is also known as Clementine. The program will support the activities of the mission operations center which is run by The Naval Research Laboratory. The computer program is designed to predict a spacecraft orbit through the various phases in which the DSPSE vehicle will fly. These orbital phases include low Earth, translunar, lunar, and deep space. The design of N-Body, its functionality, and the mathematical methods it employs are presented.