计算物理 ›› 1997, Vol. 14 ›› Issue (S1): 649-651.

• 论文 • 上一篇    下一篇

辛算法在近地小行星轨道演化数值研究中的应用

刘林, 廖新浩, 季江徽   

  1. 南京大学天文系, 210093
  • 收稿日期:1997-03-07 修回日期:1997-05-17 出版日期:1997-12-25 发布日期:1997-12-25
  • 基金资助:
    国家自然科学基金和紫金山天文台小行星基金会资助项目

THE APPLICATION OF SYMPLECTIC ALGORITHM ON NUMERICAL RESEARCH OF THE ORBITAL EVOLUTION OF THE NEAS

Liu Lin, Liao Xinhao, Ji Jianghui   

  1. Department of Astronomy, Nanjing University, 210093
  • Received:1997-03-07 Revised:1997-05-17 Online:1997-12-25 Published:1997-12-25

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。

关键词: 近地小行星, 轨道演化, 辛算法

Abstract: 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.

Key words: near-earth asteroids(NEAs), orbital evolution, symplectic algorithm

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