S
Satoshi Tanaka
Researcher at Japan Aerospace Exploration Agency
Publications - 70
Citations - 2704
Satoshi Tanaka is an academic researcher from Japan Aerospace Exploration Agency. The author has contributed to research in topics: Asteroid & Regolith. The author has an hindex of 20, co-authored 70 publications receiving 1655 citations. Previous affiliations of Satoshi Tanaka include Graduate University for Advanced Studies.
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Journal ArticleDOI
Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu—A spinning top–shaped rubble pile
Sei-ichiro Watanabe,Sei-ichiro Watanabe,Masatoshi Hirabayashi,Naru Hirata,Na. Hirata,Rina Noguchi,Yuri Shimaki,H. Ikeda,Eri Tatsumi,Makoto Yoshikawa,Makoto Yoshikawa,Shota Kikuchi,Hikaru Yabuta,Tomoki Nakamura,Shogo Tachibana,Shogo Tachibana,Yoshiaki Ishihara,Tomokatsu Morota,Kohei Kitazato,Naoya Sakatani,Koji Matsumoto,Koji Wada,Hiroki Senshu,C. Honda,Tatsuhiro Michikami,Hiroshi Takeuchi,Hiroshi Takeuchi,Toru Kouyama,R. Honda,Shingo Kameda,Tetsuharu Fuse,Hideaki Miyamoto,Goro Komatsu,S. Sugita,Tatsuaki Okada,Tatsuaki Okada,Noriyuki Namiki,Masahiko Arakawa,Masateru Ishiguro,Masanao Abe,Masanao Abe,Robert Gaskell,Eric Palmer,Olivier S. Barnouin,Patrick Michel,A. S. French,Jay W. McMahon,Daniel J. Scheeres,Paul A. Abell,Yukio Yamamoto,Yukio Yamamoto,Satoshi Tanaka,Satoshi Tanaka,Kei Shirai,Moe Matsuoka,Manabu Yamada,Y. Yokota,Y. Yokota,H. Suzuki,Kosuke Yoshioka,Yuichiro Cho,Naoki Nishikawa,T. Sugiyama,Hideaki Kikuchi,Ryodo Hemmi,Tomohiro Yamaguchi,Naoko Ogawa,Go Ono,Yuya Mimasu,Kent Yoshikawa,T. Takahashi,Yuto Takei,Atsushi Fujii,Chikako Hirose,Takahiro Iwata,Takahiro Iwata,Masahiro Hayakawa,Satoshi Hosoda,Osamu Mori,Hirotaka Sawada,Takanobu Shimada,Stefania Soldini,Hajime Yano,Hajime Yano,Ryudo Tsukizaki,M. Ozaki,M. Ozaki,Yuichi Iijima,K. Ogawa,Masaki Fujimoto,T. M. Ho,Aurelie Moussi,Ralf Jaumann,J. P. Bibring,Christian Krause,Fuyuto Terui,Takanao Saiki,Satoru Nakazawa,Yoshiyuki Tsuda,Yoshiyuki Tsuda +99 more
TL;DR: The Hayabusa2 spacecraft measured the mass, size, shape, density, and spin rate of asteroid Ryugu, showing that it is a porous rubble pile, and observations of Ryugu's shape, mass, and geomorphology suggest that Ryugu was reshaped by centrifugally induced deformation during a period of rapid rotation.
Journal ArticleDOI
The geomorphology, color, and thermal properties of Ryugu: Implications for parent-body processes
Seiji Sugita,Seiji Sugita,Rie Honda,Tomokatsu Morota,Shingo Kameda,Hirotaka Sawada,Eri Tatsumi,Manabu Yamada,C. Honda,Yasuhiro Yokota,Yasuhiro Yokota,Toru Kouyama,Naoya Sakatani,K. Ogawa,H. Suzuki,Tatsuaki Okada,Tatsuaki Okada,Noriyuki Namiki,Satoshi Tanaka,Satoshi Tanaka,Yuichi Iijima,Kosuke Yoshioka,Masahiro Hayakawa,Yuichiro Cho,Moe Matsuoka,Naru Hirata,Hideaki Miyamoto,Deborah L. Domingue,Masatoshi Hirabayashi,Tomoki Nakamura,Takahiro Hiroi,Tatsuhiro Michikami,Patrick Michel,Ronald-Louis Ballouz,Ronald-Louis Ballouz,Olivier S. Barnouin,Carolyn M. Ernst,Stefan Schröder,Hideaki Kikuchi,Ryodo Hemmi,Goro Komatsu,Goro Komatsu,T. Fukuhara,Makoto Taguchi,Takehiko Arai,Hiroki Senshu,Hirohide Demura,Yoshiko Ogawa,Yuri Shimaki,Tomohiko Sekiguchi,T. G. Müller,Axel Hagermann,Takahide Mizuno,Hirotomo Noda,Koji Matsumoto,R. Yamada,Yoshiaki Ishihara,H. Ikeda,Hiroshi Araki,K. Yamamoto,Shinsuke Abe,Fumi Yoshida,A. Higuchi,Sho Sasaki,S. Oshigami,Seiitsu Tsuruta,Kazuyoshi Asari,Seiichi Tazawa,M. Shizugami,J. Kimura,Toshimichi Otsubo,Hikaru Yabuta,Sunao Hasegawa,Masateru Ishiguro,Shogo Tachibana,Eric Palmer,Robert Gaskell,L. Le Corre,Ralf Jaumann,Katharina A. Otto,Nicole Schmitz,Paul A. Abell,M. A. Barucci,Michael E. Zolensky,Faith Vilas,Florian Thuillet,C. Sugimoto,N. Takaki,Yutaka Suzuki,Hiroaki Kamiyoshihara,Masato Okada,Kenji Nagata,Masaki Fujimoto,Makoto Yoshikawa,Makoto Yoshikawa,Yukio Yamamoto,Yukio Yamamoto,Kei Shirai,Rina Noguchi,Naoko Ogawa,Fuyuto Terui,Shota Kikuchi,Tomohiro Yamaguchi,Yusuke Oki,Yuki Takao,Hiroshi Takeuchi,Go Ono,Yuya Mimasu,Kent Yoshikawa,T. Takahashi,Yuto Takei,Atsushi Fujii,Chikako Hirose,Satoru Nakazawa,Satoshi Hosoda,Osamu Mori,Takanobu Shimada,Stefania Soldini,Takahiro Iwata,Takahiro Iwata,Masanao Abe,Masanao Abe,Hajime Yano,Hajime Yano,Ryudo Tsukizaki,M. Ozaki,M. Ozaki,Kazutaka Nishiyama,Takanao Saiki,Sei-ichiro Watanabe,Sei-ichiro Watanabe,Yoshiyuki Tsuda,Yoshiyuki Tsuda +132 more
TL;DR: Spectral observations and a principal components analysis suggest that Ryugu originates from the Eulalia or Polana asteroid family in the inner main belt, possibly via more than one generation of parent bodies.
Journal ArticleDOI
The surface composition of asteroid 162173 Ryugu from Hayabusa2 near-infrared spectroscopy
Kohei Kitazato,Ralph E. Milliken,Takahiro Iwata,Takahiro Iwata,Masanao Abe,Masanao Abe,Makiko Ohtake,Makiko Ohtake,Shuji Matsuura,Takehiko Arai,Yusuke Nakauchi,Tomoki Nakamura,Moe Matsuoka,Hiroki Senshu,Naru Hirata,Takahiro Hiroi,C. Pilorget,Rosario Brunetto,François Poulet,Lucie Riu,J. P. Bibring,Driss Takir,Deborah L. Domingue,Faith Vilas,M. A. Barucci,Davide Perna,Ernesto Palomba,A. Galiano,Kohji Tsumura,Kohji Tsumura,Takahito Osawa,Mutsumi Komatsu,Aiko Nakato,N. Takato,Tsuneo Matsunaga,Y. Takagi,Koji Matsumoto,Toru Kouyama,Y. Yokota,Y. Yokota,Eri Tatsumi,Naoya Sakatani,Yukio Yamamoto,Yukio Yamamoto,Tatsuaki Okada,Tatsuaki Okada,S. Sugita,R. Honda,Tomokatsu Morota,Shingo Kameda,Hirotaka Sawada,C. Honda,Manabu Yamada,H. Suzuki,Kosuke Yoshioka,Masahiro Hayakawa,K. Ogawa,Yuichiro Cho,Kei Shirai,Yuri Shimaki,Akira Yamaguchi,Akira Yamaguchi,Naoko Ogawa,Fuyuto Terui,Tomohiro Yamaguchi,Yuto Takei,Takanao Saiki,Satoru Nakazawa,Satoshi Tanaka,Satoshi Tanaka,Makoto Yoshikawa,Makoto Yoshikawa,Sei-ichiro Watanabe,Sei-ichiro Watanabe,Yoshiyuki Tsuda,Yoshiyuki Tsuda +75 more
TL;DR: The Hayabusa2 team's study of the near-Earth carbonaceous asteroid 162173 Ryugu, at which the spacecraft arrived in June 2018, describes Ryugu's geological features and surface colors and combined results from all three papers to constrain the asteroid's formation process.
Journal ArticleDOI
Hayabusa2 Mission Overview
Sei-ichiro Watanabe,Sei-ichiro Watanabe,Yuichi Tsuda,Makoto Yoshikawa,Satoshi Tanaka,Takanao Saiki,Satoru Nakazawa +6 more
TL;DR: The Hayabusa2 mission as mentioned in this paper was the first mission to explore a C-type near-Earth asteroid (162173) Ryugu (1999 JU3) to observe and explore the 900 m-sized object, and return samples collected from the surface layer.
Journal ArticleDOI
An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime
Masahiko Arakawa,Takanao Saiki,Koji Wada,Kazunori Ogawa,Kazunori Ogawa,Toshihiko Kadono,Kei Shirai,Kei Shirai,Hirotaka Sawada,Ko Ishibashi,Rie Honda,Naoya Sakatani,Yuichi Iijima,C. Okamoto,Hajime Yano,Y. Takagi,Masahiro Hayakawa,P. Michel,Martin Jutzi,Yuri Shimaki,S. Kimura,Yuya Mimasu,Tomoaki Toda,H. Imamura,Satoru Nakazawa,Hajime Hayakawa,Seiji Sugita,Seiji Sugita,Tomokatsu Morota,Shingo Kameda,Eri Tatsumi,Eri Tatsumi,Yuichiro Cho,Kosuke Yoshioka,Yasuhiro Yokota,Yasuhiro Yokota,Moe Matsuoka,Manabu Yamada,Toru Kouyama,C. Honda,Yuichi Tsuda,Sei-ichiro Watanabe,Sei-ichiro Watanabe,Makoto Yoshikawa,Makoto Yoshikawa,Satoshi Tanaka,Satoshi Tanaka,Fuyuto Terui,Shota Kikuchi,Tomohiro Yamaguchi,Naoko Ogawa,Go Ono,Kent Yoshikawa,T. Takahashi,Yuto Takei,Atsushi Fujii,Hiroshi Takeuchi,Hiroshi Takeuchi,Yukio Yamamoto,Yukio Yamamoto,Tatsuaki Okada,Tatsuaki Okada,Chikako Hirose,Satoshi Hosoda,Osamu Mori,Takanobu Shimada,Stefania Soldini,Ryudo Tsukizaki,Takahiro Iwata,Takahiro Iwata,M. Ozaki,M. Ozaki,Masanao Abe,Masanao Abe,Noriyuki Namiki,Kohei Kitazato,Shogo Tachibana,H. Ikeda,Naru Hirata,Rina Noguchi,Akira Miura,Akira Miura +81 more
TL;DR: An impact experiment on Ryugu is described using Hayabusa2’s Small Carry-on Impactor, which produced an artificial crater with a diameter >10 meters, which has a semicircular shape, an elevated rim, and a central pit, and implications for Ryugu's surface age are discussed.