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Dynamics of Asteroid 2006 RH120: Temporary Capture Phase

机译：小行星2006 RH120动力学：临时捕获阶段

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Asteroid 2006 RH120 was the first natural object discovered to be temporarily captured by the Earth called an irregular moon. It was captured by the Earth in 2006 for around 1 year before escaping into heliocentric orbit again. In this work, we use the Bicircular (BCP) and Elliptic Restricted 3 Body Problem Models (ER3BP) to study how simple models approximate the chaotic motions of the asteroid during the capture phase. Hypothetical scenarios of alternate lunar phasing and Sun-Earth true anomaly and its effects are explored. Overall, the eccentricity of the Earth's orbit seems to dominate the behavior of the Asteroid orbit. During the Capture Phase, the 4 body effects are important, but not critical. By adjusting the phasing, the ER3BP can model the Capture Phase nearly as accurately as the BCP.
机译：小行星2006 RH120是被地球暂时捕获的第一个自然物体，称为不规则卫星。它在2006年被地球捕获了大约1年，然后再次逃向了日心轨道。在这项工作中，我们使用双圆（BCP）和椭圆限制的3个身体问题模型（ER3BP）来研究简单模型在捕获阶段如何近似估算小行星的混沌运动。探讨了交替的月相和太阳地球真实异常的假想情景及其影响。总体而言，地球轨道的离心率似乎主导着小行星轨道的行为。在捕获阶段，这4种身体效应很重要，但并不关键。通过调整相位，ER3BP可以对捕获相位建模几乎与BCP一样精确。

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