The problem of the near-earth asteroids encountering the earth |
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| Authors: | JI Jianghui LIU Lin |
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| Institution: | 1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China;Department of Astronomy, Nanjing University, Nanjing 210093, China
2. Department of Astronomy, Nanjing University, Nanjing 210093, China |
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| Abstract: | The asteroids are the most important small bodies in the solar system, while the movement of the near-earth-asteroids (NEAs)
is specially concerned by the world. The focus on these asteroids is that they encounter the earth. The orbital evolution
of this kind of asteroid is studied by analyzing and comparing them; reasonable dynamical models and corresponding algorithm
are given, and the formal numbered NEAs are calculated. The results of the minimal distance and the very closeapproach time
with the earth agree well with those announced by the Minor Planet Center (MPC). |
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| Keywords: | near-earth asteroids (NEAs) orbital evolution encounter minimal distance |
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