Y
Yoshiaki Ishihara
Researcher at Japan Aerospace Exploration Agency
Publications - 151
Citations - 3829
Yoshiaki Ishihara is an academic researcher from Japan Aerospace Exploration Agency. The author has contributed to research in topics: Kaguya & Impact crater. The author has an hindex of 26, co-authored 137 publications receiving 2707 citations. Previous affiliations of Yoshiaki Ishihara include Kanazawa University & National Institutes of Natural Sciences, Japan.
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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
Lunar global shape and polar topography derived from Kaguya-LALT laser altimetry.
Hiroshi Araki,Seiichi Tazawa,Hirotomo Noda,Yoshiaki Ishihara,Sander Goossens,Sho Sasaki,Nobuyuki Kawano,Izumi Kamiya,Hisashi Otake,Juergen Oberst,C. K. Shum +10 more
TL;DR: A global lunar topographic map with a spatial resolution of finer than 0.5 degree has been derived using data from the laser altimeter on board the Japanese lunar explorer Selenological and Engineering Explorer (SELENE or Kaguya), which reveals unbiased lunar topography for scales finer than a few hundred kilometers.
Journal ArticleDOI
Possible mantle origin of olivine around lunar impact basins detected by SELENE
Satoru Yamamoto,Ryosuke Nakamura,Tsuneo Matsunaga,Yoshiko Ogawa,Yoshiaki Ishihara,Tomokatsu Morota,Naru Hirata,Makiko Ohtake,Takahiro Hiroi,Y. Yokota,Junichi Haruyama +10 more
TL;DR: In this paper, a global survey of the Moon surface using the spectral profiler onboard the lunar explorer SELENE/Kaguya, identifies a number of exposures of olivine in concentric regions around lunar craters, with a possible mantle origin.
Journal ArticleDOI
Farside Gravity Field of the Moon from Four-Way Doppler Measurements of SELENE (Kaguya)
Noriyuki Namiki,Takahiro Iwata,Koji Matsumoto,Hideo Hanada,Hirotomo Noda,Sander Goossens,Mina Ogawa,Nobuyuki Kawano,Kazuyoshi Asari,Seiitsu Tsuruta,Yoshiaki Ishihara,Qinghui Liu,Fuyuhiko Kikuchi,Toshiaki Ishikawa,Sho Sasaki,Chiaki Aoshima,Kosuke Kurosawa,Seiji Sugita,Tadashi Takano +18 more
TL;DR: The farside gravity field of the Moon is improved from the tracking data of the Selenological and Engineering Explorer via a relay subsatellite, revealing that the farsides has negative anomaly rings unlike positive anomalies on the nearside.