Touchdown of the Hayabusa spacecraft at the Muses Sea on Itokawa

被引：334

作者：

Yano, H

Kubota, T

Miyamoto, H

Okada, T

Scheeres, D

Takagi, Y

Yoshida, K

Abe, M

Abe, S

Barnouin-Jha, O

Fujiwara, A

Hasegawa, S

Hashimoto, T

Ishiguro, M

Kato, M

Kawaguchi, J

Mukai, T

Saito, J

Sasaki, S

Yoshikawa, M

机构：

[1] Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Dept Planetary Sci, Kanagawa 2298510, Japan

[2] Univ Tokyo, Dept Geosyst Engn, Tokyo 1138656, Japan

[3] Univ Michigan, Ann Arbor, MI 48109 USA

[4] Toho Gakuen Univ, Nagoya, Aichi 4658515, Japan

[5] Tohoku Univ, Dept Aerosp Engn, Sendai, Miyagi 9808579, Japan

[6] Kobe Univ, Dept Earth & Planetary Sci, Kobe, Hyogo 6578501, Japan

[7] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

[8] Seoul Natl Univ, Seoul 151742, South Korea

[9] Natl Astron Observ Japan, Mizusawa, Iwate 0230861, Japan

来源：

SCIENCE | 2006年 / 312卷 / 5778期

关键词：

D O I：

10.1126/science.1126164

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

After global observations of asteroid 25143 Itokawa by the Hayabusa spacecraft, we selected the smooth terrain of the Muses Sea for two touchdowns carried out on 19 and 25 November 2005 UTC for the first asteroid sample collection with an impact sampling mechanism. Here, we report initial findings about geological features, surface condition, regolith grain size, compositional variation, and constraints on the physical properties of this site by using both scientific and housekeeping data during the descent sequence of the first touchdown. Close-up images revealed the first touchdown site as a regolith field densely filled with size-sorted, millimeter- to centimeter-sized grains.

引用

页码：1350 / 1353

页数：4

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