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
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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.Abstract:
The near-Earth asteroid 162173 Ryugu, the target of the Hayabusa2 sample-return mission, is thought to be a primitive carbonaceous object. We report reflectance spectra of Ryugu's surface acquired with the Near-Infrared Spectrometer (NIRS3) on Hayabusa2, to provide direct measurements of the surface composition and geological context for the returned samples. A weak, narrow absorption feature centered at 2.72 micrometers was detected across the entire observed surface, indicating that hydroxyl (OH)-bearing minerals are ubiquitous there. The intensity of the OH feature and low albedo are similar to thermally and/or shock-metamorphosed carbonaceous chondrite meteorites. There are few variations in the OH-band position, which is consistent with Ryugu being a compositionally homogeneous rubble-pile object generated from impact fragments of an undifferentiated aqueously altered parent body.read more
Citations
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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
Evidence for widespread hydrated minerals on asteroid (101955) Bennu.
V. E. Hamilton,Amy Simon,Philip R. Christensen,D. C. Reuter,Beth E. Clark,M. A. Barucci,Neil Bowles,William V. Boynton,John Robert Brucato,Edward A. Cloutis,Harold C. Connolly,K. L. Donaldson Hanna,Josh Emery,H. L. Enos,Sonia Fornasier,Christopher W. Haberle,Romy D. Hanna,Ellen S. Howell,Hannah Kaplan,Lindsay P. Keller,C. Lantz,Jian-Yang Li,Lucy F. Lim,Timothy J. McCoy,F. Merlin,Michael C. Nolan,A. Praet,Benjamin Rozitis,Scott A. Sandford,Devin L. Schrader,Cristina A. Thomas,Xiao-Duan Zou,Dante S. Lauretta +32 more
TL;DR: Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near Earth asteroid (101955) Bennu in the form of a near-infrared absorption near 2.7
Journal ArticleDOI
The Search for Chiral Asymmetry as a Potential Biosignature in our Solar System.
Daniel P. Glavin,Aaron S. Burton,Jamie E. Elsila,José C. Aponte,José C. Aponte,Jason P. Dworkin +5 more
TL;DR: Current knowledge of the distributions and enantiomeric and isotopic compositions of amino acids and polyols found in meteorites compared to terrestrial biology are reviewed and a set of criteria for future life detection missions are proposed that can be used to help establish the origin of chiral asymmetry.
Journal ArticleDOI
Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution
Tomokatsu Morota,Tomokatsu Morota,Seiji Sugita,Seiji Sugita,Yasuo Cho,Masanori Kanamaru,Eri Tatsumi,Eri Tatsumi,Eri Tatsumi,Naoya Sakatani,Rie Honda,Naru Hirata,Hiroshi Kikuchi,Manabu Yamada,Yasuhiro Yokota,Yasuhiro Yokota,Shingo Kameda,Moe Matsuoka,Hirotaka Sawada,C. Honda,Toru Kouyama,Kazunori Ogawa,Kazunori Ogawa,H. Suzuki,Kosuke Yoshioka,Masahiro Hayakawa,Masatoshi Hirabayashi,Hirdy Miyamoto,Hirdy Miyamoto,Tatsuhiro Michikami,Takahiro Hiroi,Ryodo Hemmi,Olivier S. Barnouin,Carolyn M. Ernst,Kohei Kitazato,Tomoki Nakamura,Lucie Riu,Hiroki Senshu,Hiroshi Kobayashi,Sono Sasaki,Goro Komatsu,Naoya Tanabe,Y. Fujii,T. Irie,M. Suemitsu,N. Takaki,C. Sugimoto,Koki Yumoto,M. Ishida,H. Kato,Keiichi Moroi,Deborah L. Domingue,P. Michel,C. Pilorget,Takahiro Iwata,Takahiro Iwata,Masanao Abe,Masanao Abe,Makiko Ohtake,Makiko Ohtake,Yusuke Nakauchi,Kohji Tsumura,Kohji Tsumura,Hikaru Yabuta,Yoshiaki Ishihara,Rina Noguchi,Koji Matsumoto,Akira Miura,Akira Miura,Noriyuki Namiki,Shogo Tachibana,Shogo Tachibana,Masahiko Arakawa,H. Ikeda,Koji Wada,Takahide Mizuno,Takahide Mizuno,Chikako Hirose,Satoshi Hosoda,Osamu Mori,Takanobu Shimada,Stefania Soldini,Stefania Soldini,Ryudo Tsukizaki,Hajime Yano,Hajime Yano,M. Ozaki,M. Ozaki,Hiroshi Takeuchi,Hiroshi Takeuchi,Yukio Yamamoto,Yukio Yamamoto,Tatsuaki Okada,Tatsuaki Okada,Yuri Shimaki,Kei Shirai,Yuichi Iijima,Hirotomo Noda,Shota Kikuchi,Tomohiro Yamaguchi,Naoko Ogawa,Go Ono,Yuya Mimasu,Kent Yoshikawa,T. Takahashi,Yuto Takei,Atsushi Fujii,Satoru Nakazawa,Fuyuto Terui,Satoshi Tanaka,Satoshi Tanaka,Makoto Yoshikawa,Makoto Yoshikawa,Takanao Saiki,Sei-ichiro Watanabe,Sei-ichiro Watanabe,Yuichi Tsuda,Yuichi Tsuda +117 more
TL;DR: The authors conclude that the asteroid experienced a prior period of strong solar heating caused by changes in its orbit, and suggest that Ryugu previously experienced an orbital excursion near the Sun.
References
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TL;DR: In this paper, it was shown that the observed intensity of the diffuse light may be explained as scattered radiation if the phase function governing the scattering of starlight by the interstellar matter is strongly forward-throwing.
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Diffuse radiation in the Galaxy
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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.
Related Papers (5)
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
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
Evidence for widespread hydrated minerals on asteroid (101955) Bennu.
V. E. Hamilton,Amy Simon,Philip R. Christensen,D. C. Reuter,Beth E. Clark,M. A. Barucci,Neil Bowles,William V. Boynton,John Robert Brucato,Edward A. Cloutis,Harold C. Connolly,K. L. Donaldson Hanna,Josh Emery,H. L. Enos,Sonia Fornasier,Christopher W. Haberle,Romy D. Hanna,Ellen S. Howell,Hannah Kaplan,Lindsay P. Keller,C. Lantz,Jian-Yang Li,Lucy F. Lim,Timothy J. McCoy,F. Merlin,Michael C. Nolan,A. Praet,Benjamin Rozitis,Scott A. Sandford,Devin L. Schrader,Cristina A. Thomas,Xiao-Duan Zou,Dante S. Lauretta +32 more
The unexpected surface of asteroid (101955) Bennu
Dante S. Lauretta,Daniella DellaGiustina,Carina Bennett,Dathon Golish,Kris J. Becker,S. S. Balram-Knutson,Olivier S. Barnouin,Tammy L. Becker,William F. Bottke,William V. Boynton,Humberto Campins,Beth E. Clark,Harold C. Connolly,C. Drouet d'Aubigny,Jason P. Dworkin,Josh Emery,H. L. Enos,Victoria E. Hamilton,Carl Hergenrother,Ellen S. Howell,Matthew R.M. Izawa,Hannah Kaplan,Michael C. Nolan,Bashar Rizk,H. L. Roper,Daniel J. Scheeres,P. H. Smith,Kevin J. Walsh,C. W. V. Wolner,Osiris-Rex Team +29 more