Abstract Hayabusa2 is a Japanese interplanetary probe launched on December 3, 2014, which arrived at asteroid Ryugu on June 27, 2018. During its stay around Ryugu, it completed several challenging operations, including deploying two rovers and a lander, conducting two sample collections, and performing a kinetic impact experiment. The kinetic impact experiment was one of the biggest challenges of the Hayabusa2 mission. Investigating the physical and chemical properties of asteroid internal materials and structures is an important scientific objective for small body exploration. We developed a small kinetic impactor called the SCI (Small Carry-on Impactor) to achieve this objective. The SCI is a compact kinetic impactor designed to remove a small region of Ryugu's uppermost surface regolith layer and create an artificial crater. The spacecraft deployed the SCI on April 5, 2019, successfully creating an artificial crater with a diameter of 15 m. This paper describes the operational planning of the kinetic impact experiment and summarizes the operation results.

中文翻译：

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Hayabusa2 的动力冲击实验：操作计划和结果

摘要 Hayabusa2 是日本于 2014 年 12 月 3 日发射的行星际探测器，于 2018 年 6 月 27 日抵达小行星龙宫。它在龙宫附近逗留期间，完成了几项具有挑战性的操作，包括部署两个漫游车和一个着陆器，进行两次样本收集，并进行动力学冲击实验。动力冲击实验是隼鸟2号任务的最大挑战之一。研究小行星内部材料和结构的理化性质是小天体探测的重要科学目标。我们开发了一种称为 SCI（小型随身携带式撞击器）的小型动力撞击器来实现这一目标。SCI 是一种紧凑的动力撞击器，旨在去除 Ryugu 最上表面风化层的一小部分区域并创建一个人工陨石坑。该航天器于2019年4月5日部署了SCI，成功制造了一个直径为15 m的人造陨石坑。本文描述了动能冲击实验的操作计划并总结了操作结果。