DOI:10.1126/science.aaz1701
Published: 19 March 2020
An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime

All authors and affiliations

M. Arakawa1*, T. Saiki2, K. Wada3, K. Ogawa1,4, T. Kadono5, K. Shirai1,2, H. Sawada2, K. Ishibashi3, R. Honda6, N. Sakatani2, Y. Iijima2†, C. Okamoto1†, H. Yano2, Y. Takagi7, M. Hayakawa2, P. Michel8, M. Jutzi9, Y. Shimaki2, S. Kimura10, Y. Mimasu2, T. Toda2, H. Imamura2, S. Nakazawa2, H. Hayakawa2, S. Sugita3,11, T. Morota11, S. Kameda12, E. Tatsumi11,13, Y. Cho11, K. Yoshioka14, Y. Yokota2,6, M. Matsuoka2, M. Yamada3, T. Kouyama15, C. Honda16, Y. Tsuda2, S. Watanabe2,17, M. Yoshikawa2,18, S. Tanaka2,18, F. Terui2, S. Kikuchi2, T. Yamaguchi2‡, N. Ogawa2, G. Ono19, K. Yoshikawa19, T. Takahashi, Y. Takei2,19, A. Fujii2, H. Takeuchi2,18, Y. Yamamoto2,18, T. Okada2,11, C. Hirose19, S. Hosoda2, O. Mori2, T. Shimada2, S. Soldini20, R. Tsukizaki2, T. Iwata2, M. Ozaki2,18, M. Abe2,18, N. Namiki18,21, K. Kitazato16, S. Tachibana11, H. Ikeda19, N. Hirata16, N. Hirata1, R. Noguchi2, A. Miura2


1Department of Planetology, Kobe University, Kobe 657-8501, Japan.
2Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.
3Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.
4JAXA Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.
5Department of Biophysics, University of Occupational and Environmental Health, Kitakyusyu 807-8555, Japan.
6Department of Information Science, Kochi University, Kochi 780-8520, Japan.
7Department of Community Business, Aichi Toho University, Nagoya 465-8515, Japan.
8The Côte d'Azur Observatory, 06304 Nice Cedex 4, France.
9Physics Institute, University of Bern, National Centre of Competence in Research PlanetS, Gesellschaftsstrasse 6, 3012, Bern, Switzerland.
10Department of Electrical Engineering, Tokyo University of Science, Noda 278-8510, Japan.
11Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.
12Rikkyo University, Tokyo 171-8501, Japan.
13University of La Laguna, 38205 San Cristóbal de La Laguna, Spain.
14Instituto de Astrofísica de Canarias, La Laguna, Tenerife, E38205, Spain.
13Instituto de Astrofísica de Canarias, University of La Laguna, 38205 Tenerife, Spain.
14Department of Complexity Science and Engineering, The University of Tokyo, Kashiwa 277-8561, Japan.
15National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan.
16School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan.
17Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan.
18Department of Space and Astronautical Science, SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193, Japan.
19Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.
20Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L3 5TQ, UK.
21National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.

*Corresponding author. Email: masahiko.arakawa@penguin.kobe-u.ac.jp
†Deceased.
‡Present address: Mitsubishi Electric Corporation, Kamakura 247-8520, Japan.
§Present address: NEC Corporation, 1-10 Nisshin-cho, Fuchu, Tokyo 183-0036, Japan.