摘要
为了适应星际探测的需要，本文建立了在新的精度要求下土星卫星运动对应的力学模型，具体讨论了土卫八的运动，并针对主要摄动源土卫六的引力作用，建立了轨道变化的分析解，以此表明建立土卫运动理论应该采取的途径和精密定轨宜采用以轨道根数作为状态量的数值定轨方法。
With the development of the exploration of planets,a dynamical mode of the Japetus is suggested fo mect the new precision and the motion of the Japetus is fully discussed in this paper.The analytical solution of the Japetus is constructed to show the way on which motion theories of natual satellites of the saturn are based.It is pointed out than the methods of numerical orbital determination,with orbital elements as status vectors,should be used in the precise orbital determination.
关键词
自然卫星
引力摄动
精密定轨
轨道解
土星
Natural satellites, Gravitational perturbation, Precise orbital determination
