Itokawa, asteroid, orbital evolution, orbit calculation, planetary orbit, asteroid collision, asteroid belt, error, near Earth object, Hayabusa, MUSES-C, Asteroid Sample-return Spacecraft
宇宙航空研究開発機構 宇宙科学研究本部
Observatoire de la Cote d'Azur
著者所属（英）
Japan Aerospace Exploration Agency Institute of Space and Astronautical Science
Observatoire de la Cote d'Azur
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
第38回月・惑星シンポジウム
雑誌名(英)
Proceedings of the 38th ISAS Lunar and Planetary Symposium
ページ
139 - 142
発行年
2006-03
抄録（英）
The orbital motion of Asteroid Itokawa is quite chaotic at present, and we cannot calculate its orbital evolution accurately more than about 200 years. Therefore we studied the orbital evolution of Itokawa by a statistical method and found that the fate of Itokawa is most likely to collide with the sun or inner planets. The probability of collision with the earth is about once in one million years. As for the past of Itokawa, it is most likely that the origin of Itokawa is near the inner edge of the asteroid belt. This orbital evolution of Itokawa is typical for the near-Earth objects, so the investigation of Itokawa is important not only from the scientific point of view but also from the point of spaceguard.
Orbital evolution of asteroid (25143) Itokawa
