变化的多样性：短期撞击物的撞击位置
The Manifold Of Variations: impact location of short-term impactors
摘要：
近年来，人们对在接近地球或与地球撞击之前不久观测到的小行星问题的兴趣大大增加。由于这类物体的观测数据集非常有限，因此应采用专门的轨道确定和危险评估方法。目前可用的系统是基于系统测距，这是一种提供与观测相容的二维轨道流形的技术，即所谓的变化流形。在本文中，我们首先回顾了变分流形方法，然后展示了如何使用这组虚拟小行星来预测短期撞击物的撞击位置，并将结果与现有方法的结果进行比较。
英文摘要：
The interest in the problem of small asteroids observed shortly before a deep close approach or an impact with the Earth has grown a lot in recent years. Since the observational dataset of such objects is very limited, they deserve dedicated orbit determination and hazard assessment methods. The currently available systems are based on the systematic ranging, a technique providing a 2-dimensional manifold of orbits compatible with the observations, the so-called Manifold Of Variations. In this paper we first review the Manifold Of Variations method, to then show how this set of virtual asteroids can be used to predict the impact location of short-term impactors, and compare the results with those of already existent methods.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
