Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth - INSU - Institut national des sciences de l'Univers
Article Dans Une Revue Science Année : 2022

Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth

S. Tachibana (1) , H. Sawada (2) , R. Okazaki (3) , Y. Takano (4) , K. Sakamoto (5) , Y. Miura (1) , C. Okamoto (6) , H. Yano (2, 7) , S. Yamanouchi , P. Michel (8) , Y. Zhang (9) , S. Schwartz (10) , F. Thuillet , H. Yurimoto (11) , T. Nakamura (12) , T. Noguchi (13) , H. Yabuta (14) , H. Naraoka (15) , A. Tsuchiyama , N. Imae , K. Kurosawa (16) , A. Nakamura , K. Ogawa , S. Sugita , T. Morota , R. Honda , S. Kameda , E. Tatsumi , Y. Cho , K. Yoshioka , Y. Yokota , M. Hayakawa , M. Matsuoka , N. Sakatani , M. Yamada , T. Kouyama , H. Suzuki , C. Honda , T. Yoshimitsu , T. Kubota , H. Demura , T. Yada , M. Nishimura , K. Yogata , A. Nakato , M. Yoshitake , A. Suzuki , S. Furuya , K. Hatakeda , A. Miyazaki , K. Kumagai , T. Okada , M. Abe , T. Usui , T. Ireland , M. Fujimoto , T. Yamada , M. Arakawa , H. Connolly , A. Fujii , S. Hasegawa , N. Hirata , N. Hirata , C. Hirose , S. Hosoda , Y. Iijima , H. Ikeda , M. Ishiguro , Y. Ishihara , T. Iwata , S. Kikuchi , K. Kitazato , D. Lauretta , G. Libourel , B. Marty , K. Matsumoto , T. Michikami , Y. Mimasu , A. Miura , O. Mori , K. Nakamura-Messenger , N. Namiki , A. Nguyen , L. Nittler , H. Noda , R. Noguchi , N. Ogawa , G. Ono , M. Ozaki , H. Senshu , T. Shimada , Y. Shimaki , K. Shirai , S. Soldini , T. Takahashi , Y. Takei , H. Takeuchi , R. Tsukizaki , K. Wada , Y. Yamamoto , K. Yoshikawa , K. Yumoto , M. Zolensky , S. Nakazawa , F. Terui , S. Tanaka , T. Saiki , M. Yoshikawa , S. Watanabe , Y. Tsuda
S. Tachibana
The University of Tokyo
H. Sawada
Japan Aerospace Exploration Agency [Sagamihara]
R. Okazaki
Department of Earth and Planetary Sciences [Fukuoka]
Y. Takano
Japan Agency for Marine-Earth Science and Technology
K. Sakamoto
  • Fonction : Auteur
Institute of Space and Astronautical Science
Y. Miura
The University of Tokyo
C. Okamoto
  • Fonction : Auteur
Department of Chemistry
H. Yano
Japan Aerospace Exploration Agency [Sagamihara]
Graduate University for Advanced Studies [Hayama]
S. Yamanouchi
P. Michel
Joseph Louis LAGRANGE
CV
Y. Zhang
University of Maryland [College Park]
S. Schwartz
University of Arizona
F. Thuillet
H. Yurimoto
Hokkaido University [Sapporo, Japan]
T. Nakamura
Tohoku University [Sendai]
T. Noguchi
Kyoto University
H. Yabuta
Hiroshima University
H. Naraoka
Kyushu University
A. Tsuchiyama
N. Imae
K. Kurosawa
  • Fonction : Auteur
Planetary Exploration Research Center [Chiba]
A. Nakamura
K. Ogawa
S. Sugita
T. Morota
R. Honda
S. Kameda
E. Tatsumi
Y. Cho
K. Yoshioka
Y. Yokota
M. Hayakawa
M. Matsuoka
N. Sakatani
M. Yamada
T. Kouyama
H. Suzuki
C. Honda
T. Yoshimitsu
T. Kubota
  • Fonction : Auteur
H. Demura
T. Yada
M. Nishimura
  • Fonction : Auteur
K. Yogata
A. Nakato
M. Yoshitake
A. Suzuki
  • Fonction : Auteur
S. Furuya
K. Hatakeda
A. Miyazaki
K. Kumagai
  • Fonction : Auteur
T. Okada
M. Abe
T. Usui
T. Ireland
M. Fujimoto
T. Yamada
  • Fonction : Auteur
M. Arakawa
H. Connolly
A. Fujii
S. Hasegawa
N. Hirata
N. Hirata
  • Fonction : Auteur
C. Hirose
S. Hosoda
Y. Iijima
  • Fonction : Auteur
H. Ikeda
M. Ishiguro
Y. Ishihara
T. Iwata
S. Kikuchi
K. Kitazato
D. Lauretta
G. Libourel
B. Marty
K. Matsumoto
T. Michikami
Y. Mimasu
A. Miura
O. Mori
K. Nakamura-Messenger
N. Namiki
A. Nguyen
L. Nittler
H. Noda
R. Noguchi
N. Ogawa
G. Ono
M. Ozaki
H. Senshu
T. Shimada
Y. Shimaki
K. Shirai
S. Soldini
T. Takahashi
Y. Takei
H. Takeuchi
R. Tsukizaki
K. Wada
Y. Yamamoto
K. Yoshikawa
K. Yumoto
M. Zolensky
S. Nakazawa
F. Terui
S. Tanaka
T. Saiki
M. Yoshikawa
S. Watanabe
Y. Tsuda

Résumé

The Hayabusa2 spacecraft investigated the C-type (carbonaceous) asteroid (162173) Ryugu. The mission performed two landing operations to collect samples of surface and subsurface material, the latter exposed by an artificial impact. We present images of the second touchdown site, finding that ejecta from the impact crater was present at the sample location. Surface pebbles at both landing sites show morphological variations ranging from rugged to smooth, similar to Ryugu’s boulders, and shapes from quasi-spherical to flattened. The samples were returned to Earth on 6 December 2020. We describe the morphology of >5 grams of returned pebbles and sand. Their diverse color, shape, and structure are consistent with the observed materials of Ryugu; we conclude that they are a representative sample of the asteroid.

Domaines

Planète et Univers [physics]

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https://insu.hal.science/insu-04470962

Soumis le : mercredi 21 février 2024-14:12:28

Dernière modification le : jeudi 24 octobre 2024-16:45:18

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Dates et versions

insu-04470962 , version 1 (21-02-2024)

Identifiants

Citer

S. Tachibana, H. Sawada, R. Okazaki, Y. Takano, K. Sakamoto, et al.. Pebbles and sand on asteroid (162173) Ryugu: In situ observation and particles returned to Earth. Science, 2022, 375 (6584), pp.1011-1016. ⟨10.1126/science.abj8624⟩. ⟨insu-04470962⟩

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