An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime-Reference-Cited by-同舟云学术

An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime

Published:2020-04-03 Issue:6486 Volume:368 Page:67-71
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Arakawa M.¹^ORCID,Saiki T.²^ORCID,Wada K.³^ORCID,Ogawa K.¹⁴^ORCID,Kadono T.⁵,Shirai K.¹²^ORCID,Sawada H.²^ORCID,Ishibashi K.³^ORCID,Honda R.⁶^ORCID,Sakatani N.²^ORCID,Iijima Y.²,Okamoto C.¹,Yano H.²^ORCID,Takagi Y.⁷^ORCID,Hayakawa M.²^ORCID,Michel P.⁸^ORCID,Jutzi M.⁹^ORCID,Shimaki Y.²^ORCID,Kimura S.¹⁰^ORCID,Mimasu Y.²^ORCID,Toda T.²^ORCID,Imamura H.²^ORCID,Nakazawa S.²^ORCID,Hayakawa H.²^ORCID,Sugita S.³¹¹^ORCID,Morota T.¹¹^ORCID,Kameda S.¹²^ORCID,Tatsumi E.¹¹¹³^ORCID,Cho Y.¹¹^ORCID,Yoshioka K.¹⁴^ORCID,Yokota Y.²⁶^ORCID,Matsuoka M.²^ORCID,Yamada M.³^ORCID,Kouyama T.¹⁵^ORCID,Honda C.¹⁶^ORCID,Tsuda Y.²^ORCID,Watanabe S.²¹⁷^ORCID,Yoshikawa M.²¹⁸^ORCID,Tanaka S.²¹⁸,Terui F.²^ORCID,Kikuchi S.²^ORCID,Yamaguchi T.²^ORCID,Ogawa N.²^ORCID,Ono G.¹⁹^ORCID,Yoshikawa K.¹⁹^ORCID,Takahashi T.²^ORCID,Takei Y.²¹⁹^ORCID,Fujii A.²^ORCID,Takeuchi H.²¹⁸^ORCID,Yamamoto Y.²¹⁸^ORCID,Okada T.²²⁰^ORCID,Hirose C.¹⁹^ORCID,Hosoda S.²^ORCID,Mori O.²^ORCID,Shimada T.²^ORCID,Soldini S.²¹^ORCID,Tsukizaki R.²^ORCID,Iwata T.²¹⁸^ORCID,Ozaki M.²¹⁸^ORCID,Abe M.²¹⁸^ORCID,Namiki N.²²²³^ORCID,Kitazato K.¹⁶^ORCID,Tachibana S.¹¹^ORCID,Ikeda H.¹⁹^ORCID,Hirata N.¹⁶^ORCID,Hirata N.¹^ORCID,Noguchi R.²^ORCID,Miura A.²¹⁸^ORCID

Affiliation:

1. Department of Planetology, Kobe University, Kobe 657-8501, Japan.

2. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.

3. Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan.

4. JAXA Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.

5. Department of Basic Sciences, University of Occupational and Environmental Health, Kitakyusyu 807-8555, Japan.

6. Department of Information Science, Kochi University, Kochi 780-8520, Japan.

7. Department of Regional Business, Aichi Toho University, Nagoya 465-8515, Japan.

8. Observatoire de la Côte d’Azur, Université Côte d’Azur, CNRS, Laboratoire Lagrange, CS34229, 06304 Nice Cedex 4, France.

9. Physics Institute, University of Bern, National Centre of Competence in Research PlanetS, Gesellschaftsstrasse 6, 3012, Bern, Switzerland.

10. Department of Electrical Engineering, Tokyo University of Science, Noda 278-8510, Japan.

11. Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan.

12. Department of Physics, Rikkyo University, Tokyo 171-8501, Japan.

13. Instituto de Astrofísica de Canarias, University of La Laguna, 38205 San Cristóbal de La Laguna, Spain.

14. Department of Complexity Science and Engineering, The University of Tokyo, Kashiwa 277-8561, Japan.

15. National Institute of Advanced Industrial Science and Technology, Tokyo 135-0064, Japan.

16. School of Computer Science and Engineering, The University of Aizu, Aizu-Wakamatsu 965-8580, Japan.

17. Department of Earth and Environmental Sciences, Nagoya University, Nagoya 464-8601, Japan.

18. Department of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan.

19. Research and Development Directorate, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.

20. Department of Chemistry, The University of Tokyo, Tokyo 113-0033, Japan.

21. Department of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool L3 5TQ, UK.

22. National Astronomical Observatory of Japan, Mitaka 181-8588, Japan.

23. Department of Astronomical Science, The Graduate University for Advanced Studies, SOKENDAI, Hayama 240-0193, Japan.

Abstract

Blowing a crater in asteroid Ryugu The Hayabusa2 spacecraft was designed to collect samples from the nearby asteroid (162173) Ryugu and return them to Earth for laboratory analysis. Arakawa et al. describe how the spacecraft's Small Carry-on Impactor was fired into the asteroid's surface, producing an artificial impact crater. Analysis of the resulting plume of ejecta, recorded by a remote camera, sets an upper limit on the strength of the rubble-pile surface. The crater has a semicircular shape, probably due to a large boulder buried close to the impact location. The crater exposed material from Ryugu's subsurface, which has not been subjected to space weathering, that is suitable for collection by Hayabusa2. Science , this issue p. 67

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference34 articles.

1. The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes

2. Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu—A spinning top–shaped rubble pile

3. Asteroid Ryugu before the Hayabusa2 encounter

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5. Scientific Objectives of Small Carry-on Impactor (SCI) and Deployable Camera 3 Digital (DCAM3-D): Observation of an Ejecta Curtain and a Crater Formed on the Surface of Ryugu by an Artificial High-Velocity Impact

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