Liu Xiaodong, Baoyin Hexi, Marchis Franck
School of Aerospace, Tsinghua University, Beijing, 100084 China.
Carl Sagan Center, SETI Institute, 189 Bernardo Avenue, Mountain View, CA 94043 USA.
Astrophys Space Sci. 2014;349(2):677-680. doi: 10.1007/s10509-013-1663-3. Epub 2013 Oct 26.
In this study, the hierarchical stability of the seven known large size ratio triple asteroids is investigated. The effect of the solar gravity and primary's are considered. The force function is expanded in terms of mass ratios based on the Hill's approximation and the large size ratio property. The empirical stability parameters are used to examine the hierarchical stability of the triple asteroids. It is found that the all the known large size ratio triple asteroid systems are hierarchically stable. This study provides useful information for future evolutions of the triple asteroids.
在本研究中，对七个已知的大尺寸比三星小行星的层级稳定性进行了研究。考虑了太阳引力和主星的影响。基于希尔近似和大尺寸比特性，力函数按质量比展开。利用经验稳定性参数来检验三星小行星的层级稳定性。发现所有已知的大尺寸比三星小行星系统在层级上都是稳定的。本研究为三星小行星的未来演化提供了有用信息。
