Abstract

Analysis is conducted of the asteroid Apophis’ approaches to the Earth on potential collision trajectories. Close approaches, especially in 2051, allow the use of the gravity assist effect to deflect the asteroid at small energy costs. Estimates are obtained for the change in Apophis’ velocity after 2029, which are required to divert the object and avoid its main possible collisions with the Earth.

中文翻译：

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小行星阿波菲斯的奇异轨迹特征及其偏转以避免与地球相撞的可能性

摘要

对小行星阿波菲斯在潜在碰撞轨迹上接近地球的方法进行了分析。近距离接近，特别是在 2051 年，允许使用重力辅助效应以较小的能量成本偏转小行星。获得了对 2029 年之后阿波菲斯速度变化的估计，这需要使物体转向并避免其与地球的主要可能碰撞。