Stabilities of asteroid orbits in resonances

作     者：周礼勇 周济林 孙义燧 

作者机构：1. Department of Astronomy Nanjing University 210093 Nanjing China 

出 版 物：《Science China Mathematics》 (中国科学:数学(英文版))

年 卷 期：2002年第45卷第1期

页      面：122-128页

核心收录：

学科分类：07[理学] 070402[理学-天体测量与天体力学] 0704[理学-天文学] 

基　　金：This work is supported by the National Natural Science Foundation of China (Grant Nos. 19633010 and 19903001) 

主　　题：asteroid map diffusion. 

摘      要：A map of the asteroid motion is studied carefully. An exponential diffusion law in the chaotic sea and an algebraic law in the mixed region are observed. The effects of perturbations on diffusion are also discussed. The fixed points, their stabilities and the diffusion properties of the map give qualitative explanations of the distribution of asteroids, i.e. the depletion and accumulation of asteroids in the outer main belt, particularly in the first order mean motion resonances with Jupiter.