Influx of nitrogen-rich material from the outer Solar System indicated by iron nitride in Ryugu samplesOPEN ACCESS
Toru Matsumoto, Takaaki Noguchi, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hikaru Saito, Satoshi Hata, Dennis Harries, Aki Takigawa, Yusuke Nakauchi, Shogo Tachibana, Tomoki Nakamura, Megumi Matsumoto, Hope A. Ishii,…
The Magnesium Isotope Composition of Samples Returned from Asteroid RyuguOPEN ACCESS
Martin Bizzarro, Martin Schiller, Tetsuya Yokoyama, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Audrey Bouvier et al The Astrophysical Journal Letters, Volume 958, Number 2Published: 2023 November 24…
Mineralogy and petrology of fine-grained samples recovered from the asteroid (162173) Ryugu
Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrică, Hugues Leroux, Corentin Le…
The iron oxidation state of Ryugu samples
Mathieu Roskosz, Pierre Beck, Jean-Christophe Viennet, Tomoki Nakamura, Barbara Lavina, Michael Y. Hu, Jiyong Zhao, Esen E. Alp, Yoshio Takahashi, Tomoyo Morita, Kana Amano, Hisayoshi Yurimoto, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako…
Pervasive aqueous alteration in the early Solar System revealed by potassium isotopic variations in Ryugu samples and carbonaceous chondrites
Yan Hu, Frédéric Moynier, Wei Dai, Marine Paquet, Tetsuya Yokoyama, Yoshinari Abe, Jérôme Aléon, Conel M.O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon-Gak Choi, Nicolas…
Phyllosilicates with embedded Fe-based nanophases in Ryugu and Orgueil
Hugues Leroux, Corentin Le Guillou, Maya Marinova, Sylvain Laforet, Jean-Christophe Viennet, Bahae-Eddine Mouloud, Adrien Teurtrie, Francisco de la Peña, Damien Jacob, Daniel Hallatt, Mario Pelaez Fernandez, David Troadec, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei…
A newly revised estimation of bulk densities and examination of the shape of individual Ryugu grainsOPEN ACCESS
Toru Yada, Kasumi Yogata, Kentaro Hatakeda, Aiko Nakato, Masahiro Nishimura, Kana Nagashima, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Rui Tahara, Rei Kanemaru, Arisa Nakano, Miwa Yoshitake, Ayako Iwamae, Shizuho Furuya, Akira Tsuchiyama, Shogo Tachibana, Tatsuhiro…
Compositional heterogeneity of insoluble organic matter extracted from asteroid Ryugu samples
Eric Quirico, Lydie Bonal, Yoko Kebukawa, Kana Amano, Hikaru Yabuta, Van T. H. Phan, Pierre Beck, Laurent Rémusat, Emmanuel Dartois, Cecile Engrand, Zita Martins, Laure Bejach, Alexandre Dazzi, Ariane Deniset-Besseau, Jean Duprat, Jérémie Mathurin, Gilles…
Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sampleOPEN ACCESS
Tetsuya Yokoyama Meenakshi Wadhwa Tsuyoshi Iizuka Vinai Rai Ikshu Gautam Yuki Hibiya Yuki Masuda Makiko K. Haba Ryota Fukai Rebekah Hines Nicole Phelan Yoshinari Abe Jérôme Aléon Conel M. O’D. Alexander Sachiko Amari Yuri Amelin…
Abundant extraterrestrial purine nucleobases in the Murchison meteorite: Implications for a unified mechanism for purine synthesis in carbonaceous chondrite parent bodies
Toshiki Koga, Yoshinori Takano, Yasuhiro Oba, Hiroshi Naraoka, Naohiko Ohkouchi Geochimica et Cosmochimica ActaIn Press, Journal Pre-proof, Available online 18 October 2023 LINK “Extraterrestrial nucleobases are of key interest owing to their implications for the…
Soluble organic matter Molecular atlas of Ryugu reveals cold hydrothermalism on C-type asteroid parent bodyOPEN ACCESS
Philippe Schmitt-Kopplin, Norbert Hertkorn, Mourad Harir, Franco Moritz, Marianna Lucio, Lydie Bonal, Eric Quirico, Yoshinori Takano, Jason P. Dworkin, Hiroshi Naraoka, Shogo Tachibana, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hisayoshi Yurimoto, Kanako Sakamoto,…
Importance of asteroid sample return
Nature Geoscience, Volume 16, page 833Editorial. Published: 06 October 2023 LINK “On 24 September, OSIRIS-REx landed in the Utah desert with a cache of approximately two hundred grams of rock from the asteroid 101955 Bennu….
Space weathering record and pristine state of Ryugu samples from MicrOmega spectral analysis
T. Le Pivert-Jolivet, R. Brunetto, C. Pilorget, J.-P. Bibring, A. Nakato, V. Hamm, K. Hatakeda, C. Lantz, D. Loizeau, L. Riu, K. Yogata, D. Baklouti, F. Poulet, A. Aléon-Toppani, J. Carter, Y. Langevin, T. Okada,…
The thermal history of Ryugu based on Raman characterization of Hayabusa2 samples
Lydie Bonal, Eric Quirico, Gilles Montagnac, Mutsumi Komatsu, Yoko Kebukawa, Hikaru Yabuta, Kana Amano, Jens Barosch, Laure Bejach, George D. Cody, Emmanuel Dartois, Alexandre Dazzi, Bradley De Gregorio, Ariane Deniset-Besseau, Jean Duprat, Cécile Engrand, Minako…
Space weathering acts strongly on the uppermost surface of RyuguOPEN ACCESS
Moe Matsuoka, Ei-ichi Kagawa, Kana Amano, Tomoki Nakamura, Eri Tatsumi, Takahito Osawa, Takahiro Hiroi, Ralph Milliken, Deborah Domingue, Driss Takir, Rosario Brunetto, Antonella Barucci, Kohei Kitazato, Seiji Sugita, Yuri Fujioka, Osamu Sasaki, Shiho Kobayashi, Takahiro…
Chemical evolution of primordial salts and organic sulfur molecules in the asteroid 162173 RyuguOPEN ACCESS
Toshihiro Yoshimura, Yoshinori Takano, Hiroshi Naraoka, Toshiki Koga, Daisuke Araoka, Nanako O. Ogawa, Philippe Schmitt-Kopplin, Norbert Hertkorn, Yasuhiro Oba, Jason P. Dworkin, José C. Aponte, Takaaki Yoshikawa, Satoru Tanaka, Naohiko Ohkouchi, Minako Hashiguchi, Hannah McLain,…
Three-dimensional multiscale assembly of phyllosilicates, organics, and carbonates in small Ryugu fragments
Zelia Dionnet, Stefano Rubino, Alice Aléon-Toppani, Rosario Brunetto, Akira Tsuchiyama, Cateline Lantz, Zahia Djouadi, Donia Baklouti, Tomoki Nakamura, Ferenc Borondics, Christophe Sandt, Eva Heripre, David Troadec, Obadias Mivumbi, Jérome Aléon, Theo Ternier, Megumi Matsumoto, Kana…
Visualization of nanoscale magnetic domain states in the asteroid RyuguOPEN ACCESS
Yuki Kimura, Takeharu Kato, Toshiaki Tanigaki, Tetsuya Akashi, Hiroto Kasai, Satoshi Anada, Ryuji Yoshida, Kazuo Yamamoto, Tomoki Nakamura, Masahiko Sato, Kana Amano, Mizuha Kikuiri, Tomoyo Morita, Eiichi Kagawa, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko…
Gaia view of primitive inner-belt asteroid families: Searching for the origins of asteroids Bennu and RyuguOPEN ACCESS
Marco Delbo, Chrysa Avdellidou, Kevin J. Walsh Accepted for publication in Astronomy and Astrophysics PDF (OPEN ACCESS) “Near-Earth asteroids Ryugu and Bennu, were visited, characterised, and sampled by the Hayabusa2 and OSIRIS-REx missions: remote sensing…
The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent PlanetesimalOPEN ACCESS
Haolan Tang, Edward D. Young, Lauren Tafla, Andreas Pack, Tommaso Di Rocco, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson6, Marc Chaussidon,…
Infrared absorption spectra from organic matter in the asteroid Ryugu samples: Some unique properties compared to unheated carbonaceous chondrites
Yoko Kebukawa, Eric Quirico, Emmanuel Dartois, Hikaru Yabuta, Laure Bejach, Lydie Bonal, Alexandre Dazzi, Ariane Deniset-Besseau, Jean Duprat, Cecile Engrand, Jérémie Mathurin, Jens Barosch, George D. Cody, Bradley De Gregorio, Minako Hashiguchi, Kanami Kamide, David…
Evidence of global space weathering by solar wind on asteroid 162173 Ryugu
T. Hiroi, R.E. Milliken, K.M. Robertson, C.D. Schultz, K. Amano, T. Nakamura, H. Yurimoto, T. Noguchi, R. Okazaki, H. Naraoka, H. Yabuta, K. Sakamoto, T. Yada, M. Nishimura, A. Nakato, A. Miyazaki, K. Yogata, M….
Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid RyuguOPEN ACCESS
Ann. N. Nguyen, Prajkta Mane, Lindsay P. Keller, Laurette Piani, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon-Gak Choi,Nicolas…
Carbonate record of temporal change in oxygen fugacity and gaseous species in asteroid Ryugu
Wataru Fujiya, Noriyuki Kawasaki, Kazuhide Nagashima, Naoya Sakamoto, Conel M. O’D. Alexander, Noriko T. Kita, Kouki Kitajima, Yoshinari Abe, Jérôme Aléon, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc…
Development of preparation methods of polished sections of returned samples from asteroid Ryugu by the Hayabusa2 spacecraft
Daisuke Nakashima, Yuri Fujioka, Kanchi Katayama, Tomoyo Morita, Mizuha Kikuiri, Kana Amano, Eiichi Kagawa, Tomoki Nakamura MAPSVersion of Record online: 03 July 2023 LINK “Preparation procedures of polished sections of the Ryugu samples returned by…
The Formation of a Rubble Pile Asteroid: Insights from the Asteroid RyuguOPEN ACCESS
Tsutomu Ota, Christian Potiszil, Katsura Kobayashi, Ryoji Tanaka, Hiroshi Kitagawa, Tak Kunihiro, Chie Sakaguchi, Masahiro Yamanaka and Eizo Nakamura Universe 2023, 9(6), 293, REVIEW LINK (OPEN ACCESS)PDF (DOWNLOAD) “The Hayabusa2 mission returned primitive samples from…
Ryugu asteroid sample return provides a natural laboratory for primordial chemical evolutionOPEN ACCESS
Yasuhiro Oba, Yoshinori Takano, Jason P. Dworkin & Hiroshi Naraoka Nature Communications, Volume 14, Article number: 3107Comment, published: 30 May 2023 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The samples returned from near-Earth asteroid (162173) Ryugu provide…
A Comparison of Presolar Isotopic Signatures in Laboratory-Studied Primitive Solar System Materials and Comet 67P/Churyumov-Gerasimenko: New Insights from Light Elements, Halogens, and Noble GasesOPEN ACCESS
Peter Hoppe, Martin Rubin & Kathrin Altwegg Space Science Reviews, Volume 219, Article number: 32 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Comets are considered the most primitive planetary bodies in our Solar System. ESA’s Rosetta mission…
The spatial distribution of soluble organic matter and their relationship to minerals in the asteroid (162173) RyuguOPEN ACCESS
Minako Hashiguchi, Dan Aoki, Kazuhiko Fukushima, Hiroshi Naraoka, Yoshinori Takano, Jason P. Dworkin, Karin E. Dworkin, José C. Aponte, Jamie E. Elsila, John M. Eiler, Yoshihiro Furukawa, Aogu Furusho, Daniel P. Glavin, Heather V. Graham,…
MASCOT’s in situ analysis of asteroid Ryugu in the context of regolith samples and remote sensing data returned by Hayabusa2OPEN ACCESS
Katharina Otto, Tra-Mi Ho, Stephan Ulamec, Jean-Pierre Bibring, Jens Biele, Matthias Grott, Maximilian Hamm, David Hercik, Ralf Jaumann, Masahiko Sato, Stefan E. Schröder, Satoshi Tanaka, Ulrich Auster, Kohei Kitazato, Jörg Knollenberg, Aurelie Moussi, Tomoki Nakamura,…
Variations of the surface characteristics of Ryugu returned samplesOPEN ACCESS
Aiko Nakato, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Akiko Miyazaki, Kana Nagashima, Kentaro Hatakeda, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Jean-Pierre Bibring, Cedric Pilorget, Vincent Hamm, Rosario Brunetto, Lucie Riu, Lionel Lourit, Damien Loizeau, Tania…
Grain Size Effects on Visible and Near-infrared (0.35–2.5μm) Laboratory Spectra of Ordinary Chondrite and HED MeteoritesOPEN ACCESS
Bryn Bowen, Vishnu Reddy, Mario De Florio, Theodore Kareta, Neil Pearson, Roberto Furfaro, Benjamin Sharkey, Allison McGraw, David Cantillo, Juan A. Sanchez and Adam Battle The Planetary Science Journal, Volume 4, Number 3 LINK (OPEN…
Uracil in the carbonaceous asteroid (162173) RyuguOPEN ACCESS
Yasuhiro Oba, Toshiki Koga, Yoshinori Takano, Nanako O. Ogawa, Naohiko Ohkouchi, Kazunori Sasaki, Hajime Sato, Daniel P. Glavin, Jason P. Dworkin, Hiroshi Naraoka, Shogo Tachibana, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta,…
Insight into multi-step geological evolution of C-type asteroids from Ryugu particles
Akira Yamaguchi, Naotaka Tomioka, Motoo Ito, Naoki Shirai, Makoto Kimura, Richard C. Greenwood, Ming-Chang Liu, Kaitlyn A. McCain, Nozomi Matsuda, Masayuki Uesugi, Naoya Imae, Takuji Ohigashi, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata, Hayato Yuzawa, Yu…
Insights into the formation and evolution of extraterrestrial amino acids from the asteroid RyuguOPEN ACCESS
Christian Potiszil, Tsutomu Ota, Masahiro Yamanaka, Chie Sakaguchi, Katsura Kobayashi, Ryoji Tanaka, Tak Kunihiro, Hiroshi Kitagawa, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi…
Interaction between clay minerals and organics in asteroid RyuguOPEN ACCESS
J.-C. Viennet, M. Roskosz, T. Nakamura, P. Beck, B. Baptiste, B. Lavina, E.E. Alp, M.Y. Hu, J. Zhao, M. Gounelle, R. Brunetto, H. Yurimoto, T. Noguchi, R. Okazaki, H. Yabuta, H. Naraoka, K. Sakamoto, S….
PAHs, hydrocarbons, and dimethylsulfides in Asteroid Ryugu samples A0106 and C0107 and the Orgueil (CI1) meteoriteOPEN ACCESS
José C. Aponte, Jason P. Dworkin, Daniel P. Glavin, Jamie E. Elsila, Eric T. Parker, Hannah L. McLain, Hiroshi Naraoka, Ryuji Okazaki, Yoshinori Takano, Shogo Tachibana, Guannan Dong, Sarah S. Zeichner, John M. Eiler, Hisayoshi…
Extraterrestrial Amino Acids and Amines Identified in Asteroid Ryugu Samples Returned by the Hayabusa2 Mission
Eric T. Parker, Hannah L. McLain, Daniel P. Glavin, Jason P. Dworkin, Jamie E. Elsila, José C. Aponte, Hiroshi Naraoka, Yoshinori Takano, Shogo Tachibana, Hikaru Yabuta, Hisayoshi Yurimoto, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko…
Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu
Hiroshi Naraoka, Yoshinori Takano, Jason P. Dworkin, Yasuhiro Oba, Kenji Hamase, Aogu Furusho, Nanako O. Ogawa, Minako Hashiguchi, Kazuhiko Fukushima, […], and Yuichi Tsuda Science24 Feb 2023Vol 379, Issue 6634 LINK “Structured Abstract INTRODUCTIONSurface material…
Macromolecular organic matter in samples of the asteroid (162173) Ryugu
Hikaru Yabuta, George D. Cody, Cécile Engrand, Yoko Kebukawa, Bradley De Gregorio, Lydie Bonal, Laurent Remusat, Rhonda Stroud, Eric Quirico, […] and Yuichi Tsuda Science24 Feb 2023Vol 379, Issue 6634 LINK “Structured Abstract INTRODUCTIONOrganic compounds…
Chondrule-like objects and Ca-Al-rich inclusions in Ryugu may potentially be the oldest Solar System materialsOPEN ACCESS
Daisuke Nakashima, Tomoki Nakamura, Mingming Zhang, Noriko T. Kita, Takashi Mikouchi, Hideto Yoshida, Yuma Enokido, Tomoyo Morita, Mizuha Kikuiri, Kana Amano, Eiichi Kagawa, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe,…
Nonequilibrium Spherulitic Magnetite In The Ryugu Samples
Elena Dobrică, Hope A. Ishii, John P. Bradley, Kenta Ohtaki, Adrian J. Brearley, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hugues Leroux,…
Evidence of Space Weathering on the CI1-Chondrite Asteroid 162173 Ryugu
Hiroi T.* Milliken R. E. Robertson K. M. Schultz C. D. Amano K. Nakamura T. 54th Lunar and Planetary Science Conference 2023 abstract [#1040] A 6 nm shift in the 2.7-micron band positoin between returned samples and the surface materials of asteroid Ryugu indicates…
Ni Isotopic Composition of Ryugu Samples Returned by the Hayabusa2 Mission
Spitzer F.* Burkhardt C. Kleine T. Hayabusa2 Initial Analysis Chem. Team Hayabusa2-Initial-Analysis core 54th Lunar and Planetary Science Conference 2023abstract [#2488] The Ni isotopic composition of Ryugu is identical to that of CIs and different from all other…
Water in Asteroid Ryugu is Deuterium-Rich Compared to Earth and CI Chondrites
Nittler L. R.* Barosch J. Wang J. Alexander C. M. O’D. 54th Lunar and Planetary Science Conference 2023abstract [#1411] Use oxygen ions / Measure Ryugu water / Deuterium-rich!
Ryugu and the Quest for Unaltered CI-Like Materials from the Early Solar System
Goodrich C. A.* Lee S. Mane P. Hamilton V. E. Zolensky M. E. Kita N. T. 54th Lunar and Planetary Science Conference 2023abstract [#1446] Anhydrous silicates and Ca,Al-rich phases in Ryugu are remnants of CI3 material. We are studying xenoliths from polymict ureilites that show…
The noble gas and nitrogen relationship between Ryugu and carbonaceous chondritesOPEN ACCESS
M.W. Broadley, D.J. Byrne, E. Füri, L. Zimmermann, B. Marty, R. Okazaki, T. Yada, F. Kitajima, S. Tachibana, K. Yogata, K. Sakamoto, H. Yurimoto, T. Nakamura, T. Noguchi, H. Naraoka, H. Yabuta, S. Watanabe, Y….
Early fluid activity on Ryugu inferred by isotopic analyses of carbonates and magnetite
Kaitlyn A. McCain, Nozomi Matsuda, Ming-Chang Liu, Kevin D. McKeegan, Akira Yamaguchi, Makoto Kimura, Naotaka Tomioka, Motoo Ito, Naoya Imae, Masayuki Uesugi, Naoki Shirai, Takuji Ohigashi, Richard C. Greenwood, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata,…
Constraints on Solar System early evolution by MicrOmega analysis of Ryugu carbonates
D. Loizeau, C. Pilorget, L. Riu, R. Brunetto, J.-P. Bibring, A. Nakato, A. Aléon-Toppani, K. Hatakeda, K. Yogata, J. Carter, T. Le Pivert-Jolivet, T. Yada, T. Okada, T. Usui, Y. Langevin, C. Lantz, D. Baklouti,…
Small grains from Ryugu: handling and analysis pipeline for infrared synchrotron microspectroscopyOPEN ACCESS
Stefano Rubino, Zélia Dionnet, Alice Aléon-Toppani, Rosario Brunetto, Tomoki Nakamura, Donia Baklouti, Zahia Djouadi, Cateline Lantz, Obadias Mivumbi, Ferenc Borondics, Stephane Lefrançois, Christophe Sandt, Francesco Capitani, Eva Héripré, David Troadec, Megumi Matsumoto, Kana Amano, Tomoyo…
Methods and tools for handling, transportation, weighing, and pelletization applied to the initial analysis of volatile components in the Hayabusa2 samplesOPEN ACCESS
Ryuji Okazaki, Shinji Yamanouchi, Kazuhiko Shimada, Atsushi Baba, Fumio Kitajima & Toru Yada Earth, Planets and Space, Volume 74, Article number: 190Published: 27 December 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The Hayabusa2 spacecraft succeeded in sampling and returning…
A dehydrated space-weathered skin cloaking the hydrated interior of RyuguOPEN ACCESS
Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrică, Hugues Leroux, Corentin Le…
Oxygen isotope evidence from Ryugu samples for early water delivery to Earth by CI chondritesOPEN ACCESS
Richard C. Greenwood, Ian A. Franchi, Ross Findlay, James A. Malley, Motoo Ito, Akira Yamaguchi, Makoto Kimura, Naotaka Tomioka, Masayuki Uesugi, Naoya Imae, Naoki Shirai, Takuji Ohigashi, Ming-Chang Liu, Kaitlyn A. McCain, Nozomi Matsuda, Kevin…
Oxygen isotopes of anhydrous primary minerals show kinship between asteroid Ryugu and comet 81P/Wild2OPEN ACCESS
Noriyuki Kawasaki, Kazuhide Nagashima, Naoya Sakamoto, Toru Matsumoto, Ken-ichi Bajo, Sohei Wada, Yohei Igami, Akira Miyake, Takaaki Noguchi, Daiki Yamamoto, Sara S. Russell, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Martin…
Contribution of Ryugu-like material to Earth’s volatile inventory by Cu and Zn isotopic analysis
Marine Paquet, Frederic Moynier, Tetsuya Yokoyama, Wei Dai, Yan Hu, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon-Gak Choi,…
Constraining surface properties of asteroid (162173) Ryugu from numerical simulations of Hayabusa2 mission impact experimentOPEN ACCESS
Martin Jutzi, Sabina D. Raducan, Yun Zhang, Patrick Michel & Masahiko Arakawa Nature Communications, Volume 13, Article number: 7134 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The Hayabusa2 mission impact experiment on asteroid Ryugu created an unexpectedly…
Trace-element analysis of mineral grains in Ryugu rock fragment sections by synchrotron-based confocal X-ray fluorescenceOPEN ACCESS
Benjamin Bazi, Pieter Tack, Miles Lindner, Bart Vekemans, Ella De Pauw, Beverley Tkalcec, Frank E. Brenker, Jan Garrevoet, Gerald Falkenberg, Hikaru Yabuta, Hisayoshi Yurimoto, Tomoki Nakamura, Kana Amano, Megumi Matsumoto, Yuri Fujioka, Yuma Enokido, Daisuke…
Derivation of 1.064 μm normal albedos on the C-type asteroid Ryugu from laser pulse intensity measurement of the Hayabusa2 LIDAROPEN ACCESS
Ryuhei Yamada, Keiko Yamamoto, Shoko Oshigami, Hiroshi Araki, Hiroki Senshu, Hirotomo Noda, Noriyuki Namiki, Koji Matsumoto, Fumi Yoshida, Shinsuke Abe, Naru Hirata, Sho Sasaki & Takahide Mizuno Earth, Planets and Space volume 74, Article number:…
Linking remote sensing, in situ and laboratory spectroscopy for a Ryugu analog meteorite sampleOPEN ACCESS
Alessandro Maturilli, Sabrina Schwinger, Enrica Bonato, Jörn Helbert, Mickael Baqué, Maximilian Hamm, Giulia Alemanno and Mario D’Amore Frontiers in Space Technologies, 24 October 2022Sec. Space Robotics LINK (OPEN ACCESS)PDF (DOWNLOAD) “In 2022 JAXA issued an…
First asteroid gas sample delivered by the Hayabusa2 mission: A treasure box from RyuguOPEN ACCESS
Ryuji Okazaki, Yayoi N. Miura, Yoshinori Takano, Hirotaka Sawada, Kanako Sakamoto, Toru Yada, Keita Yamada, Shinsuke Kawagucci, Yohei Matsui, […] Shogo Tachibana Science Advances20 Oct 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS) Supplementary Materials (PDF) “The…
Ryugu’s nucleosynthetic heritage from the outskirts of the Solar SystemOPEN ACCESS
Timo Hopp, Nicolas Dauphas, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro […] Hisayoshi Yurimoto Science Advances20 Oct 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS) Supplementary Materials (PDF)…
Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolutionOPEN ACCESS
Ryuji Okazaki, Bernard Marty, Henner Busemann, Ko Hashizume, Jamie D. Gilmour, Alex Meshik, Toru Yada, Fumio Kitajima, Michael W. Broadley […] Yuichi Tsuda Science Advances20 Oct 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS) Supplementary Materials (PDF)…
The Solar System calcium isotopic composition inferred from Ryugu samplesOPEN ACCESS
F. Moynier, W. Dai, T. Yokoyama, Y. Hu, M. Paquet, Y. Abe, J. Aléon, C.M.O’D. Alexander, S. Amari, Y. Amelin, K.-I. Bajo, et al. Geochemical Perspectives Letters v24Published 19 October 2022 LINK (OPEN ACCESS)PDF (OPEN…
Particle size distributions inside and around the artificial crater produced by the Hayabusa2 impact experiment on RyuguOPEN ACCESS
K. Ogawa, N. Sakatani, T. Kadono, M. Arakawa, R. Honda, K. Wada, K. Shirai, Y. Shimaki, K. Ishibashi, Y. Yokota, T. Saiki, H. Imamura, Y. Tsuda, S. Nakazawa, Y. Takagi, M. Hayakawa, H. Yano, C….
Rare earth element identification and quantification in millimetre-sized Ryugu rock fragments from the Hayabusa2 space missionOPEN ACCESS
Pieter Tack, Ella De Pauw, Beverley Tkalcec, Miles Lindner, Benjamin Bazi, Bart Vekemans, Frank Brenker, Marco Di Michiel, Masayuki Uesugi, Hisayoshi Yurimoto, Tomoki Nakamura, Kana Amano, Megumi Matsumoto, Yuri Fujioka, Yuma Enokido, Daisuke Nakashima, Takaaki…
Formation and evolution of carbonaceous asteroid Ryugu: Direct evidence from returned samples
T. Nakamura M. Matsumoto K. Amano Y. Enokido M. E. Zolensky T. Mikouchi H. Genda S. Tanaka M. Y. Zolotov K. Kurosawa S. Wakita R. Hyodo H. Nagano D. Nakashima Y. Takahashi Y. Fujioka M….
Characterization of the MASCOT landing area by Hayabusa2OPEN ACCESS
Stefan Schröder, Naoya Sakatani, Rie Honda, Eri Tatsumi, Yasuhiro Yokota, Deborah Domingue, Yuichiro Cho, Shingo Kameda, Kohei Kitazato, Toru Kouyama, Moe Matsuoka, Akira Miura, Tomokatsu Morota, Tatsuaki Okada, Hirotaka Sawada, Hiroki Senshu, Yuri Shimaki, Seiji…
Incorporation of 16O-rich anhydrous silicates in the protolith of highly hydrated asteroid Ryugu
Ming-Chang Liu, Kaitlyn A. McCain, Nozomi Matsuda, Akira Yamaguchi, Makoto Kimura, Naotaka Tomioka, Motoo Ito, Masayuki Uesugi, Naoya Imae, Naoki Shirai, Takuji Ohigashi, Richard C. Greenwood, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata, Hayato Yuzawa, Yu…
A pristine record of outer Solar System materials from asteroid Ryugu’s returned sampleOPEN ACCESS
Motoo Ito, Naotaka Tomioka, Masayuki Uesugi, Akira Yamaguchi, Naoki Shirai, Takuji Ohigashi, Ming-Chang Liu, Richard C. Greenwood, Makoto Kimura, Naoya Imae, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata, Hayato Yuzawa, Yu Kodama, Akira Tsuchiyama, Masahiro Yasutake,…
Presolar Stardust in Asteroid RyuguOPEN ACCESS
Jens Barosch, Larry R. Nittler, Jianhua Wang, Conel M. O’D. Alexander, Bradley T. De Gregorio, Cécile Engrand, Yoko Kebukawa, Kazuhide Nagashima, Rhonda M. Stroud, Hikaru Yabuta et all The Astrophysical Journal Letters, Volume 935, Number…
NIRS3 spectral analysis of the artificial Omusubi-Kororin crater on Ryugu
A Galiano, E Palomba, F Dirri, A Longobardo, K Kitazato, T Iwata, M Matsuoka, T Hiroi, D Takir, T Nakamura, M Abe, M Ohtake, S Matsuura, S Watanabe, M Yoshikawa, T Saiki, S Tanaka, T…
Incipient Space Weathering on 162173 Ryugu Recorded by Crystallographic Changes of Pyrrhotite
Harries D. * Langenhorst F. Matsumoto T. Noguchi T. Yurimoto H. Nakamura T. Yabuta H. Naraoka H. Okazaki R. Sakamoto K. Tachibana S. Watanabe S. Tsuda Y. MetSoc 2022 abstract [#6073] LINK “Pyrrhotite recovered from…
Dehydration Decomposition of Phyllosilicates in the C-Type Asteroid Ryugu Material by Space Weathering
Noguchi T. * Matsumoto T. Miyake A. Igami Y. Haruta M. Saito H. Hata S. Seto Y. Miyahara M. Tomioka N. Ishii H. A. Bradley J. P. Ohtaki K. Dobricǎ E. Leroux H. LeGuillou C….
Molecular Atlas and Structural Complexity Revealed with Ultrahigh Resolution Mass Spectrometry and Nuclear Magnetic Resonance Spectroscopy of Ryugu
Schmitt-Kopplin Ph. Hertkorn H. Harir M. Lucio M. Naraoka H. Hayabusa2-Initial-Analysis SOM Team Hayabusa2-Initial-Analysis Core MetSoc 2022 abstract [#6040]LINK “Ryugu sample A0106 showed extreme chemical diversity and complexity, close to low temperature water altered meteoritic…
Site selection for the Hayabusa2 artificial cratering and subsurface material sampling on Ryugu
Shota Kikuchi, Sei-ichiro Watanabe, Koji Wada, Takanao Saiki et al. Planetary and Space ScienceIn Press, Journal Pre-proof, Available online 16 June 2022 LINK “Highlights • Hayabusa2 aimed to collect subsurface samples from Ryugu excavated by…
Environmental assessment in the prelaunch phase of Hayabusa2 for safety declaration of returned samples from the asteroid (162173) Ryugu: background monitoring and risk management during development of the sampler systemOPEN ACCESS
Kanako Sakamoto, Yoshinori Takano, Hirotaka Sawada, Ryuji Okazaki, Takaaki Noguchi, Masayuki Uesugi, Hajime Yano, Toru Yada, Masanao Abe, Shogo Tachibana & The Hayabusa2 Project Team Earth, Planets and Space, Volume 74, Article number: 90 LINK…
Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteoritesOPEN ACCESS
Tetsuya Yokoyama, Kazuhide Nagashima, Izumi Nakai, Edward D. Young, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon-Gak Choi, Nicolas…
On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspectiveOPEN ACCESS
Eizo NAKAMURA , Katsura KOBAYASHI, Ryoji TANAKA, Tak KUNIHIRO, Hiroshi KITAGAWA, Christian POTISZIL, Tsutomu OTA, Chie SAKAGUCHI, Masahiro YAMANAKA, Dilan M. RATNAYAKE, Havishk TRIPATHI, Rahul KUMAR, Maya-Liliana AVRAMESCU, Hidehisa TSUCHIDA, Yusuke YACHI, Hitoshi MIURA, Masanao…
Three-axial shape distributions of pebbles, cobbles and boulders smaller than a few meters on asteroid RyuguOPEN ACCESS
Tatsuhiro Michikami, Axel Hagermann, Tomokatsu Morota, Yasuhiro Yokota, Seitaro Urakawa, Hiroyuki Okamura, Naoya Tanabe, Koki Yumoto, Tatsuki Ebihara, Yuichiro Cho, Carolyn M. Ernst, Masahiko Hayakawa, Masatoshi Hirabayashi, Naru Hirata, Chikatoshi Honda, Rie Honda, Shingo Kameda,…
Non-protein amino acids identified in carbon-rich Hayabusa particles
Eric T. Parker, Queenie H. S. Chan, Daniel P. Glavin, Jason P. Dworkin MAPSVersion of Record online: 08 March 2022 LINK “Amino acid abundances in acid-hydrolyzed hot water extracts of gold foils containing five Category…
In-Situ Oxygen Isotope Study of Anhydrous Minerals in a Ryugu Particle: Implications for the Precursors to CI-Chondrite Parent Bodies
Liu M.-C. McCain K. A. Matsuda N. Yamaguchi A. Kimura M. et al. PDF LPSC 2022 abstract [#2276] “Ryugu’s olivine / Not only chondrule pieces / But also AOA remains.”
Carbonaceous Presolar Grains in Asteroid Ryugu
Nittler L R. Barosch J. De Gregorio B. T. Stroud R. M. Yabuta H. et al. PDF LPSC 2022 abstract [#1423] “Dust made of carbon / Older than Sun, found in / Ryugu samples..”
Organics and Their Relationship to Phyllosilicates in Ryugu, Orgueil and Ivuna: In Situ TEM and XANES Study
Le Guillou C. Bernard S. Leroux H. Noguchi T. Yurimoto H. et al. PDF LPSC 2022 abstract [#2099] “Organics in Ryugu are less oxygenated than CI chondrites. Either terrestrial weathering or parent body alteration conditions…
Olivine Compositional Variation of Asteroid Ryugu Samples: Possible Precursors of Ryugu’s Parent Asteroid
Mikouchi T. Nakamura T. Zolensky M. E. Yoshida H. Nakashima D. et al. PDF LPSC 2022 abstract [#1935] “Ryugu samples have rare olivine-bearing fragments, possible precursors of Ryugu’s parent asteroid. Ryugu olivines are compositionally similar…
Mineralogical Comparison Between Asteroid Ryugu Samples Returned by the Hayabusa2 Spatial Mission and Antarctic Micrometeorites (AMMs)
Bejach L. Engrand C. Duprat J. Dartois E. Mathurin J. et al. PDF LPSC 2022 abstract [#1924] “Ryugu samples are made of phyllosilicates, magnetite, Fe sulfides, carbonates, rare apatite. AMMs show similar magnetite structures (~5%),…
Comparison of Ryugu Particles with IDPs and Comet Samples
Brownlee D. E. Joswiak D. J. Nakamura T. Morita T. Amano K. et al. PDF LPSC 2022 abstract [#1774] “TEM studies compare 50µm Ryugu particles with comet samples and stratospheric IDPs. Ryugu is similar to…
Amino Acid Analyses of a Sample of Ryugu by a Combination of Liquid Chromatography and High-Resolution Mass Spectrometry Techniques
Parker E. T. * Furusho A. Glavin D. P. Hamase K. Naraoka H. et al. PDF LPSC 2022 abstract [#2651] “This abstract summarizes the amino acid analyses of the acid-hydrolyzed, hot water extract of the…
The Oxygen Isotopic Composition of Hayabusa2 Particles: Testing the Relationship with CI and CY Chondrites
Greenwood R. C. Findlay R. Franchi I. A. Malley J. A. Ito M. et al. PDF LPSC 2022 abstract [#2105] “High-precision oxygen isotope analysis of returned samples from asteroid Ryugu demonstrates a close affinity with…
Reflectance Spectral Comparison Between a Large Ryugu Returned Sample and Carbonaceous Chondrites
Amano K. * Matsuoka M. Nakamura T. Kagawa E. Hiroi T. et al. PDF LPSC 2022 abstract [#1789] “We measured reflectance spectra of the samples collected from asteroid Ryugu by Hayabusa2 and compared the results…
The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu: Evidence for Similarity to CI Chondrites
Young E. D. * Tang H. Tafla L. Pack A. Di Rocco T. et al. PDF LPSC 2022 abstract [#1290] “Oxygen isotope analyses of samples returned from asteroid Ryugu resemble CI chondrites but differ in…
Multi-Isotopic Analyses of Bulk Ryugu Samples Returned by the Hayabusa2 Mission
Yokoyama T. * Hayabusa2-Initial-Analysis Chemistry Hayabusa2-Initial-Analysis Core PDF LPSC 2022 abstract [#1273] “We report preliminary results on the isotopic compositions of Ti, Cr, and Pb obtained from the Ryugu samples and some carbonaceous chondrites.”
Soluble Organic Compounds in Asteroid 162173 Ryugu
Naraoka H. * Takano Y. Dworkin J. P. Hayabusa2-Initial-Analysis SOM Team Hayabusa2-Initial-Analysis Core PDF LPSC 2022 abstract [#1781] “We report soluble organic compounds in the slovent-extract samples in the Ryugu grains collected by the Hayabusa2…
Macromolecular Organic Matter in C-Type Asteroid Ryugu
Yabuta H. * Cody G. D. Engrand C. Kebukawa Y. De Gregorio B. et al. PDF LPSC 2022 abstract [#2241] “The initial analysis results on macromolecular organic matter from the asteroid Ryugu samples are presented…
Isotopic Compositions of Noble Gases and Nitrogen in the Ryugu Samples Returned by Hayabusa2
Okazaki R. * Marty B. Busemann H. Hashizume K. Gilmour J. et al. PDF LPSC 2022 abstract [#1348] “We report the first results of measurements for isotopic ratios and concentrations of noble gases and nitrogen…
Mineralogy and Space Weathering of Fine Fraction Recovered from Asteroid (162173) Ryugu
Noguchi T. * Matsumoto T. Miyake A. Igami Y. Haruta M. et al. PDF LPSC 2022 abstract [#1747] “The grains recovered from Ryugu by the Hayabusa2 have mineralogy similar to that of CIs and show…
Early History of Ryugu’s Parent Asteroid: Evidence from Return Sample
Nakamura T. * Matsumoto M. Amano K. Enokido Y. Zolensky M. E. et al. PDF LPSC 2022 abstract [#1753] “Formation and evolution of Ryugu’s parent asteroid were estimated based on mineralogical and physical properties of…
Chemical and Isotopic Characterization of Asteroid Ryugu
Yurimoto H. * Hayabusa2-Initial-Analysis Chemistry Team Hayabusa2-Initial-Analysis Core PDF LPSC 2022 abstract [#1377] Returned samples from C-type asteroid Ryugu show strong similarities to CI (Ivuna-like) carbonaceous chondrites.”
The Asteroid 162173 Ryugu: a Cometary OriginOPEN ACCESS
Hitoshi Miura, Eizo Nakamura and Tak Kunihiro The Astrophysical Journal Letters, Volume 925, Number 2 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The Japanese Hayabusa2 mission has revealed in detail the physical characteristics of the C-type asteroid…
Resurfacing processes constrained by crater distribution on Ryugu
Naofumi Takaki, Yuichiro Cho, Tomokatsu Morota, Eri Tatsumi, Rie Honda, Shingo Kameda, Yasuhiro Yokota, Naoya Sakatani, Toru Kouyama, Masahiko Hayakawa, Moe Matsuoka, Manabu Yamada, Chikatoshi Honda, Hidehiko Suzuki, Kazuo Yoshioka, Kazunori Ogawa, Hirotaka Sawada, Patrick…
Mid-infrared emissivity of partially dehydrated asteroid (162173) Ryugu shows strong signs of aqueous alterationOPEN ACCESS
M. Hamm, M. Grott, H. Senshu, J. Knollenberg, J. de Wiljes, V. E. Hamilton, F. Scholten, K. D. Matz, H. Bates, A. Maturilli, Y. Shimaki, N. Sakatani, W. Neumann, T. Okada, F. Preusker, S. Elgner,…
Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid RyuguOPEN ACCESS
Toru Yada, Masanao Abe, Tatsuaki Okada, Aiko Nakato, Kasumi Yogata, Akiko Miyazaki, Kentaro Hatakeda, Kazuya Kumagai, Masahiro Nishimura, Yuya Hitomi, Hiromichi Soejima, Miwa Yoshitake, Ayako Iwamae, Shizuho Furuya, Masayuki Uesugi, Yuzuru Karouji, Tomohiro Usui, Tasuku…
First compositional analysis of Ryugu samples by the MicrOmega hyperspectral microscopeOPEN ACCESS
C. Pilorget, T. Okada, V. Hamm, R. Brunetto, T. Yada, D. Loizeau, L. Riu, T. Usui, A. Moussi-Soffys, K. Hatakeda, A. Nakato, K. Yogata, M. Abe, A. Aléon-Toppani, J. Carter, M. Chaigneau, B. Crane, B….
MicrOmega/MASCOT first results
Jean-Pierre Bibring, Cédric Pilorget, Lucie Riu, Vincent Hamm, Rosario Brunetto, Tra-Mi Ho, Ralph Jaumann, Yves Langevin, Aurélie Moussi, François Poulet, Mathieu Vincendon, the MicrOmega/Mascot team Planetary and Space ScienceAvailable online 4 December 2021 LINK “Highlights…
YORP Effect on Asteroid 162173 Ryugu: Implications for the Dynamical History
M. Kanamaru, S. Sasaki, T. Morota, Y. Cho, E. Tatsumi, M. Hirabayashi, N. Hirata, H. Senshu, Y. Shimaki, N. Sakatani, S. Tanaka, T. Okada, T. Usui, S. Sugita, S. Watanabe JGR: PlanetsFirst Published: 11 November…
Polarimetric Properties of the Near–Sun Asteroid (155140) 2005 UD in Comparison with Other Asteroids and Meteoritic SamplesOPEN ACCESS
Masateru Ishiguro, Yoonsoo P. Bach, Jooyeon Geem, Hiroyuki Naito, Daisuke Kuroda, Myungshin Im, Myung Gyoon Lee, Jinguk Seo, Sunho Jin, Yuna G. Kwon, Tatsuharu Oono, Seiko Takagi, Mitsuteru Sato, Kiyoshi Kuramoto, Takashi Ito, Sunao Hasegawa,…
Fine-regolith production on asteroids controlled by rock porosity
S. Cambioni, M. Delbo, G. Poggiali, C. Avdellidou, A. J. Ryan, J. D. P. Deshapriya, E. Asphaug, R.-L. Ballouz, M. A. Barucci, C. A. Bennett, W. F. Bottke, J. R. Brucato, K. N. Burke, E….
Development of a multispectral stereo-camera system comparable to Hayabusa2 Optical Navigation Camera (ONC-T) for observing samples returned from asteroid RyuguOPEN ACCESS
Yuichiro Cho, Koki Yumoto, Yuna Yabe, Shoki Mori, Jo A. Ogura, Toru Yada, Akiko Miyazaki, Kasumi Yogata, Kentaro Hatakeda, Masahiro Nishimura, Masanao Abe, Tomohiro Usui, Seiji Sugita PDF (OPEN ACCESS) “Hayabusa2 collected 5.4 g of…
The Reflectance Spectra of CV-CK Carbonaceous chondrites from the Near Infrared to the VisibleOPEN ACCESS
Safoura Tanbakouei, J.M. Trigo-Rodriquez, J. Llorca, C.E. Moyano-Cambero, I.P. Williams, A.S. Rivkin Accepted for publication in MNRAS on July 19th, 2021 PDF (OPEN ACCESS) LINK “Carbonaceous chondrite meteorites are so far the only available samples…
Ryugu’s observed volatile loss did not arise from impact heating aloneOPEN ACCESS
Kosuke Kurosawa, Ryota Moriwaki, Hikaru Yabuta, Ko Ishibashi, Goro Komatsu & Takafumi Matsui Communications Earth & Environment, Volume 2, Article number: 146 (2021) LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Carbonaceous asteroids, including Ryugu and Bennu, which…
Geologic History and Crater Morphology of Asteroid (162173) Ryugu Crater morphology and chronology of asteroid Ryugu
Y. Cho, T. Morota, M. Kanamaru, N. Takaki, K. Yumoto, C. M. Ernst, M. Hirabayashi, O. S. Barnouin, E. Tatsumi, K. A. Otto, N. Schmitz, R. J. Wagner, R. Jaumann, H. Miyamoto, H. Kikuchi, R….
Spectral diversity of the inner belt primitive asteroid background population
Anicia Arredondo, Humberto Campins, Noemi Pinilla-Alonso, Julia de León, Vania Lorenzi, David Morate, Juan Luis Rizos, Mário De Prá IcarusIn Press, Journal Pre-proof, Available online 9 July 2021 LINK “Highlights • New NIR observations of…
Initial Descriptions of Asteroid Ryugu Samples Returned by Hayabusa2
Yada T., Abe M., Nakato A., Yogata K., Miyazaki A., Kumagai K., Hatakeda K., Okada T., Nishimura M., Furuya S., Yoshitake M., Iwamae A., Soejima H., Hitomi Y., Riu L., Lourit L., Pilorget C., Hamm…
Thermal Analysis and Constraints for the MASCOT Landing Site Selection on the Asteroid Ryugu
Barbara Cozzoni, Michael Maibaum, Maximilian Hamm Planetary and Space ScienceIn Press, Journal Pre-proof, Available online 23 June 2021 LINK “Highlights • Application of Thermal Mathematical Models for landing site selection• Day-Night temperature is main criteria…
Hayabusa2 Operation for MASCOT Delivery to Ryugu Surface
Yuya Mimasu, Tatsuaki Okada, Yuto Takei, Takanao Saiki, Tra-Mi Ho, Aurelie Moussi, Yuichi Tsuda Planetary and Space ScienceAvailable online 24 June 2021 LINK “Highlights Hayabusa2 carries several rovers and one lander The lander, named MASCOT,…
The pre-atmospheric hydrogen inventory of CM carbonaceous chondritesOPEN ACCESS
Martin R. Lee, Benjamin E. Cohen, Adrian J. Boyce, Lydia J. Hallis, Luke Daly Geochimica et Cosmochimica ActaIn Press, Journal Pre-proof, Available online 19 June 2021 LINK (OPEN ACCESS) “Highlights • Up to half of…
The Macroporosity of Rubble Pile Asteroid Ryugu and Implications for the Origin of ChondrulesOPEN ACCESS
William Herbst, James P. Greenwood and Teng Ee Yap The Planetary Science Journal, Volume 2, Number 3 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “We use the known surface boulder-size distribution of the C-type rubble pile asteroid…
Rotational states and shapes of Ryugu and Bennu: Implications for interior structure and strength
J.H. Roberts, O.S. Barnouin, M.G. Daly, K.J. Walsh, M.C. Nolan, R.T. Daly, P. Michel, Y. Zhang, M.E. Perry, G.A. Neumann, J.A. Seabrook, R.W. Gaskell, E.E. Palmer, J.R. Weirich, S. Watanabe, N. Hirata, Na. Hirata, S….
Anomalously porous boulders on (162173) Ryugu as primordial materials from its parent body
N. Sakatani, S. Tanaka, T. Okada, T. Fukuhara, L. Riu, S. Sugita, R. Honda, T. Morota, S. Kameda, Y. Yokota, E. Tatsumi, K. Yumoto, N. Hirata, A. Miura, T. Kouyama, H. Senshu, Y. Shimaki, T….
Resurfacing processes on asteroid (162173) Ryugu caused by an artificial impact of Hayabusa2’s Small Carry-on Impactor
Rie Honda, Masahiko Arakawa, Yuri Shimaki, Kei Shirai, Yasuhiro Yokota, Toshihiko Kadono, Koji Wada, Kazunori Ogawa, Ko Ishibashi, Naoya Sakatani, Satoru Nakazawa, Minami Yasui, Tomokatsu Morota, Shingo Kameda, Eri Tatsumi, Manabu Yamada, Toru Kouyama, Yuichiro…
Ejecta distribution from impact craters on Ryugu: Possible origin of the bluer units
Naoyuki Hirata, Ren Ikeya IcarusIn Press, Journal Pre-proof, Available online 15 April 2021 LINK “Highlights • We calculated the distribution of ejecta blankets from actual craters on Ryugu.• Ejecta emplacement could explain the bluish color…
The Macroporosity of Rubble Pile Asteroid Ryugu and Implications for the Origin of ChondrulesOPEN ACCESS
William Herbst, James P. Greenwood, Teng Ee Yap Accepted for publication in the Planetary Science Journal PDF (OPEN ACCESS) “We use the known surface boulder-size distribution of the C-type rubble pile asteroid Ryugu (NEA 162173)…
Improved method of hydrous mineral detection by latitudinal distribution of 0.7-μm surface reflectance absorption on the asteroid Ryugu
Shingo Kameda, Yasuhiro Yokota, Toru Kouyama, Eri Tatsumi, Marika Ishida, Tomokatsu Morota, Rie Honda, Naoya Sakatani, Manabu Yamada, Moe Matsuoka, Hidehiko Suzuki, Yuichiro Choe, Masahiko Hayakawa, Chikatoshi Honda, Hirotaka Sawada, Kazuo Yoshioka, Kazunori Ogawa, Seiji…
Primordial porous structure of chondrite parent bodies due to self-gravityOPEN ACCESS
Tomomi Omura, Akiko M. Nakamura Accepted for publication in The Planetary Science Journal PDF (OPEN ACCESS) “The porosity of an asteroid is important when studying the evolution of our solar system through small bodies and…
Implications of High Polarization Degree for the Surface State of RyuguOPEN ACCESS
Daisuke Kuroda, Jooyeon Geem, Hiroshi Akitaya, Sunho Jin, Jun Takahashi, Koki Takahashi, Hiroyuki Naito, Kana Makino, Tomohiko Sekiguchi, Yoonsoo P. Bach, Jinguk Seo, Shuji Sato, Hiroshi Sasago, Koji S. Kawabata, Aoi Kawakami, Miyako Tozuka, Makoto…
Thermally altered subsurface material of asteroid (162173) Ryugu
K. Kitazato, R. E. Milliken, T. Iwata, M. Abe, M. Ohtake, S. Matsuura, Y. Takagi, T. Nakamura, T. Hiroi, M. Matsuoka, L. Riu, Y. Nakauchi, K. Tsumura, T. Arai, H. Senshu, N. Hirata, M. A….
Impact Experiment on Asteroid (162173) Ryugu: Structure beneath the Impact Point Revealed by In Situ Observations of the Ejecta Curtain
Toshihiko Kadono, Masahiko Arakawa, Rie Honda, Ko Ishibashi, Kazunori Ogawa, Naoya Sakatani, Hirotaka Sawada, Yuri Shimaki, Kei Shirai, Seiji Sugita, and Koji Wada The Astrophysical Journal Letters, Volume 899, Number 1 LINK “An impact experiment…
Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution
T. Morota, S. Sugita, Y. Cho, M. Kanamaru, E. Tatsumi, N. Sakatani, R. Honda, N. Hirata, H. Kikuchi, M. Yamada, Y. Yokota, S. Kameda, M. Matsuoka, H. Sawada, C. Honda, T. Kouyama, K. Ogawa, H….
Highly porous nature of a primitive asteroid revealed by thermal imaging
Tatsuaki Okada, Tetsuya Fukuhara, Satoshi Tanaka, Makoto Taguchi, Takehiko Arai, Hiroki Senshu, Naoya Sakatani, Yuri Shimaki, Hirohide Demura, Yoshiko Ogawa, Kentaro Suko, Tomohiko Sekiguchi, Toru Kouyama, Jun Takita, Tsuneo Matsunaga, Takeshi Imamura, Takehiko Wada, Sunao…
Images from the surface of asteroid Ryugu show rocks similar to carbonaceous chondrite meteorites
R. Jaumann, N. Schmitz, T.-M. Ho, S. E. Schröder, K. A. Otto, K. Stephan, S. Elgner, K. Krohn, F. Preusker, F. Scholten, J. Biele, S. Ulamec, C. Krause, S. Sugita, K.-D. Matz, T. Roatsch, R….
Low thermal conductivity boulder with high porosity identified on C-type asteroid (162173) Ryugu
M. Grott, J. Knollenberg, M. Hamm, K. Ogawa, R. Jaumann, K. A. Otto, M. Delbo, P. Michel, J. Biele, W. Neumann, M. Knapmeyer, E. Kührt, H. Senshu, T. Okada, J. Helbert, A. Maturilli, N. Müller,…
Ground-based Characterization of Hayabusa2 Mission Target Asteroid 162173 Ryugu: Constraining Mineralogical Composition in Preparation for Spacecraft OperationsOPEN ACCESS
Lucille Le Corre, Juan A. Sanchez, Vishnu Reddy, Driss Takir, Edward A. Cloutis, Audrey Thirouin, Kris J. Becker, Jian-Yang Li, Seiji Sugita, Eri Tatsumi PDF (OPEN ACCESS) “Asteroids that are targets of spacecraft missions are…
Space Weathering Trends on Carbonaceous Asteroids: A possible explanation for Bennu’s blue slope?
C. Lantz, R.P. Binzel, F.E. DeMeo Icarus In Press, Available online 8 November 2017 LINK “Highlights • Analysis of Near-Earth Asteroid spectra compared to irradiated carbonaceous chondrites. • Link between Principal Composant Analysis scores and…
An evaluation method of reflectance spectra to be obtained by Hayabusa2 Near-Infrared Spectrometer (NIRS3) based on laboratory measurements of carbonaceous chondritesOPEN ACCESS
Moe Matsuoka, Tomoki Nakamura, Takahito Osawa, Takahiro Iwata, Kohei Kitazato, Masanao Abe, Yusuke Nakauchi, Takehiko Arai, Mutsumi Komatsu, Takahiro Hiroi, Naoya Imae, Akira Yamaguchi, Hideyasu Kojima Earth, Planets and Space December 2017, 69:120 First Online:04…
New candidates for active asteroids: main-belt (145) Adeona, (704) Interamnia, (779) Nina, (1474) Beira, and near-Earth (162173) RyuguOPEN ACCESS
Vladimir V. Busarev, Andrei B. Makalkin, Faith Vilas, Sergey I. Barabanov, Marina P. Scherbina submitted to Icarus 2017 PDF (OPEN ACCESS) “For the first time, spectral signs of subtle coma activity were observed for four…
