摘要
采用改进的显式辛算法对近地小行星的轨道演化进行数值研究，在力学模型中除考虑各大行星的引力摄动外，还考虑了后牛顿效应，而在算法上则着重探索辛算法在近地小行星轨道演化研究中的应用前景，特别是当这类小行星与某一大行星靠近时辛算法的有效性。
The numerical research about the orbital evolution of NEAs has been made by adopting the improved explicit Symplectic Algorithm. For the mechanic model, Post Newtonian effect has also been taken into account, apart from considering the gravitational perturbations of major Planets, while for the algorithms the investigation focuses on the applicable prospect that the Symplectic Algorithm would be suitable for the study of the orbital evolution of the NEAs, especially for the effectiveness of the Symplectic Algorithm in the case that the NEAs close approach a major planet.
出处
《计算物理》
CSCD
北大核心
1997年第4期649-651,共3页
Chinese Journal of Computational Physics
基金
国家自然科学基金
紫金山天文台小行星基金会
关键词
近地小行星
轨道演化
辛算法
小行星
near earth asteroids(NEAs)
orbital evolution
symplectic algorithm.
