本项目拟利用光变曲线观测数据，建立小行星非主轴自转动力学模型；针对我国深空探测任务，研究具体非主轴自转小行星的自转性质和自转动力学，分析特定近地非主轴自转小行星轨道长期演化特性；从统计角度研究该类小行星自转参数、物理参数和轨道根数的分布特性，探索其在动力学演化过程中的共性与特性；并从理论分析和数值模拟的角度，研究多种形成机制作用下小行星非主轴自转状态的激发过程，从而揭示太阳系天体早期的形成演化机制。本项目的研究内容是行星科学领域的国际热点问题。项目的开展有助于对非主轴自转小行星的自转动力学、物理性质及形成演化机制等科学问题进行更深入的探索，提高数值模拟计算的能力，补充和完善太阳系行星科学理论体系，为中国未来小行星深空探测任务的直接需求提供科学基础。本项目的研究成果将提高我国对太阳系小行星的观测能力，提升行星科学理论研究的国际影响力，力争使中国小行星自转动力学的科学研究列于国际前沿。

This project is going to set up a dynamic model of non-principal-axis (NPA) rotational asteroid based on light curves data。 For the Chinese deep space exploration mission, spin state of some specific tumblers and orbit evolution of some tumbling NEO (Near Earth Object) will be studied. We will also do some research on distribution characteristics of rotational parameters, physical parameters and orbit elements statically to understand the generality and specialty during the formation and evolution process of NPA rotation state. Effects induced by different formation mechanism on formation and evolution of NPA asteroids will be studied theoretically and numerically in the meantime in order to explore the early evolutional history of our solar system. This research is an international popular problem in planetary science and our works will help to better understand the rotational dynamics of NPA spin state and the physics, formation and evolution of NPA rotators. Our result will provide scientific theoretical basis for our country’s asteroid exploration mission, and will significantly improve our observation and computation abilities, promote international cooperation and enhance our international academic influence on asteroid science and rotational dynamics and make our scientific research level international frontier.