The nature of asteroid Itokawa revealed by Hayabusa

M. Yoshikawa, A. Fujiwara, J. Kawaguchi

研究成果: Article査読

3 被引用数 (Scopus)

抄録

The spacecraft Hayabusa, which was launched in 2003, arrived at its destination, asteroid (25143) Itokawa in September 2005. The appearance of Itokawa, a small S-type near Earth asteroids, was totally unexpected. The surface is covered with a lot of boulders and there are only a few craters on it. It looks like a contact binary asteroid. The surface composition is quite similar to LL-chondrite. The estimated density is 1.9 0.13 (g/cm3), so the macro-porosity is about 40%. This means that Itokawa is a rubble pile object. In Itokawa, we may see such things that are very close to building blocks of asteroids. In this paper, we review the mission and the first scientific results.

本文言語English
ページ(範囲)401-416
ページ数16
ジャーナルProceedings of the International Astronomical Union
2
S236
DOI
出版ステータスPublished - 2006 8
外部発表はい

ASJC Scopus subject areas

  • 医学(その他)
  • 天文学と天体物理学
  • 栄養および糖尿病
  • 公衆衛生学、環境および労働衛生
  • 宇宙惑星科学

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