Evolution and Dynamics of Triple Asteroid Systems

三重小行星系统的演化和动力学

• 批准号: 413911837
• 负责人: Professor Dr. Jürgen Oberst
• 金额: --
• 依托单位: Institut für Planetenforschung
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2021-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/413911837?language=en
• 关键词: Evolution; Dynamics; Triple; Asteroid; Systems

We investigate the characteristics and dynamics of triple NEO (Near-Earth Asteroid) systems, three of which are currently known: 2001 SN263, 1994 CC, and 3122 Florence. Using analytical and numerical techniques, we investigate the orbital and rotational states of the system components on time-scales of 105 years and beyond. Furthermore, we study the orbital life times of spacecraft in the triple systems. Special attention is given to perturbation by solar radiation pressure and resonances, which can lead to stable trajectories beneficial for remote sensing, mass determination, and gravity field mapping. Furthermore, we search for stable regions, which may support the accumulation of dust and formation of rings and tori. Multiple NEO systems may provide important clues on the origin and evolution of the NEO population. The three triple systems mentioned above have been identified as attractive targets for future space missions.

我们研究了三个近地小行星系统的特征和动力学，其中三个是目前已知的：2001 SN 263，1994 CC和3122佛罗伦萨。 使用分析和数值技术，我们调查的轨道和旋转状态的系统组件的时间尺度为105年及以后。在此基础上，研究了三重系统中航天器的轨道寿命。特别注意太阳辐射压力和共振的扰动，这可能会导致稳定的轨道有利于遥感，质量测定和重力场测绘。此外，我们寻找稳定的区域，这可能会支持尘埃的积累和环和环面的形成。多个近地天体系统可为近地天体群的起源和演变提供重要线索。 上述三个三重系统已被确定为未来空间飞行任务的有吸引力的目标。