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Abstract

Rendezvous of the Japanese spacecraft Hayabusa with the near-Earth asteroid 25143 Itokawa took place during the interval September through November 2005. The onboard camera imaged the solid surface of this tiny asteroid (535 meters by 294 meters by 209 meters) with a spatial resolution of 70 centimeters per pixel, revealing diverse surface morphologies. Unlike previously explored asteroids, the surface of Itokawa reveals both rough and smooth terrains. Craters generally show unclear morphologies. Numerous boulders on Itokawa's surface suggest a rubble-pile structure.
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References and Notes

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We thank the mission operation and spacecraft team of the Hayabusa project at ISAS/JAXA for their efforts that led to Hayabusa being the first Japanese spacecraft to rendezvous with and land on the asteroid. This research was supported by ISAS/JAXA, NASA, Kobe University through “The 21st Century Center of Excellence Program of the Origin and Evolution of Planetary Systems,” and the University of Aizu.

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Science
Volume 312 | Issue 5778
2 June 2006

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Received: 2 February 2006
Accepted: 20 April 2006
Published in print: 2 June 2006

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Authors

Affiliations

J. Saito*
Hayabusa Project Team, Institute of Space and Astronautical Sciences (ISAS), Japan Aerospace Exploration Agency (JAXA), 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan.
School of Engineering, Tokai University, Kanagawa 259-1292, Japan.
H. Miyamoto
Department of Geosystem Engineering, University of Tokyo, Tokyo 113-8656, Japan.
Planetary Science Institute, 1700 East Ft. Lowell Road, Suite 106, Tucson, AZ 85719, USA.
R. Nakamura
National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan.
M. Ishiguro
Planetary Science Department, ISAS, JAXA, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan.
T. Michikami
Fukushima National College of Technology, Iwaki 970-8034, Japan.
A. M. Nakamura
Graduate School of Science and Technology, Kobe University, Kobe 657-8501, Japan.
H. Demura
School of Computer Science and Engineering, University of Aizu, Fukushima 965-8580, Japan.
S. Sasaki
Mizusawa Astrogeodynamics Observatory, National Astronomical Observatory of Japan (NAOJ), Oshu, Iwate 023-0861, Japan.
N. Hirata
Graduate School of Science and Technology, Kobe University, Kobe 657-8501, Japan.
School of Computer Science and Engineering, University of Aizu, Fukushima 965-8580, Japan.
C. Honda
Planetary Science Department, ISAS, JAXA, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan.
A. Yamamoto
Remote Sensing Technology Center of Japan, Roppongi, Tokyo 106-0032, Japan.
Y. Yokota
Planetary Science Department, ISAS, JAXA, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan.
T. Fuse
Subaru Telescope, NAOJ, Hilo, HI 96720, USA.
F. Yoshida
Optical and Infrared Astronomy Division, NAOJ, Osawa, Tokyo 181-8588, Japan.
D. J. Tholen
Institute for Astronomy, University of Hawaii, Woodlawn Drive, Honolulu, HI 96822, USA.
R. W. Gaskell
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.
T. Hashimoto
Department of Spacecraft Engineering, ISAS, JAXA, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan.
T. Kubota
Department of Spacecraft Engineering, ISAS, JAXA, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan.
Y. Higuchi
Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705–6643, USA.
T. Nakamura
Optical and Infrared Astronomy Division, NAOJ, Osawa, Tokyo 181-8588, Japan.
P. Smith
Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705–6643, USA.
K. Hiraoka
Graduate School of Science and Technology, Kobe University, Kobe 657-8501, Japan.
T. Honda
Graduate School of Science and Technology, Kobe University, Kobe 657-8501, Japan.
S. Kobayashi
School of Computer Science and Engineering, University of Aizu, Fukushima 965-8580, Japan.
M. Furuya
School of Computer Science and Engineering, University of Aizu, Fukushima 965-8580, Japan.
N. Matsumoto
School of Computer Science and Engineering, University of Aizu, Fukushima 965-8580, Japan.
E. Nemoto
School of Computer Science and Engineering, University of Aizu, Fukushima 965-8580, Japan.
A. Yukishita
School of Computer Science and Engineering, University of Aizu, Fukushima 965-8580, Japan.
K. Kitazato
Planetary Science Department, ISAS, JAXA, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510, Japan.
B. Dermawan
Department of Astronomy and Bosscha Observatory, Bandung Institute of Technology Bandung 40132, Indonesia.
A. Sogame
School of Engineering, Tokai University, Kanagawa 259-1292, Japan.
J. Terazono
Public Affairs Department, JAXA, Tokyo 100-8260, Japan.
C. Shinohara
Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705–6643, USA.
H. Akiyama
Faculty of Engineering and Resource Science, Akita University, Akita 010-8502, Japan.

Notes

* To whom correspondence should be addressed. E-mail: [email protected]

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