Search Results - "Michikami, Tatsuhiro"

Hayabusa2 Landing Site Selection: Surface Topography of Ryugu and Touchdown Safety by Kikuchi, Shota, Watanabe, Sei-ichiro, Saiki, Takanao, Yabuta, Hikaru, Sugita, Seiji, Morota, Tomokatsu, Hirata, Naru, Hirata, Naoyuki, Michikami, Tatsuhiro, Honda, Chikatoshi, Yokota, Yashuhiro, Honda, Rie, Sakatani, Naoya, Okada, Tatsuaki, Shimaki, Yuri, Matsumoto, Koji, Noguchi, Rina, Takei, Yuto, Terui, Fuyuto, Ogawa, Naoko, Yoshikawa, Kent, Ono, Go, Mimasu, Yuya, Sawada, Hirotaka, Ikeda, Hitoshi, Hirose, Chikako, Takahashi, Tadateru, Fujii, Atsushi, Yamaguchi, Tomohiro, Ishihara, Yoshiaki, Nakamura, Tomoki, Kitazato, Kohei, Wada, Koji, Tachibana, Shogo, Tatsumi, Eri, Matsuoka, Moe, Senshu, Hiroki, Kameda, Shingo, Kouyama, Toru, Yamada, Manabu, Shirai, Kei, Cho, Yuichiro, Ogawa, Kazunori, Yamamoto, Yukio, Miura, Akira, Iwata, Takahiro, Namiki, Noriyuki, Hayakawa, Masahiko, Abe, Masanao, Tanaka, Satoshi, Yoshikawa, Makoto, Nakazawa, Satoru, Tsuda, Yuichi

“…One of the primary goals of Hayabusa2 is to land on the asteroid Ryugu to collect its surface materials. The key for a successful touchdown is to find a…”
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Three-dimensional imaging of high-velocity-impact induced crack growth in carbonaceous meteorites by Michikami, Tatsuhiro, Tsuchiyama, Akira, Hagermann, Axel, Takeda, Akio, Shishido, Katsuki, Otsuka, Yushi, Sasaki, Osamu, Nakamura, Michihiko, Okumura, Satoshi, Kano, Harumasa, Hasegawa, Sunao

“…The material strength of meteorites provides useful information on the make-up and history of asteroids. However, the unique determination of the material…”
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Three-Dimensional Structure of Hayabusa Samples: Origin and Evolution of Itokawa Regolith by Tsuchiyama, Akira, Uesugi, Masayuki, Matsushima, Takashi, Michikami, Tatsuhiro, Kadono, Toshihiko, Nakamura, Tomoki, Uesugi, Kentaro, Nakano, Tsukasa, Sandford, Scott A., Noguchi, Ryo, Matsumoto, Toru, Matsuno, Junya, Nagano, Takashi, Imai, Yuta, Takeuchi, Akihisa, Suzuki, Yoshio, Ogami, Toshihiro, Katagiri, Jun, Ebihara, Mitsuru, Ireland, Trevor R., Kitajima, Fumio, Nagao, Keisuke, Naraoka, Hiroshi, Noguchi, Takaaki, Okazaki, Ryuji, Yurimoto, Hisayoshi, Zolensky, Michael E., Mukai, Toshifumi, Abe, Masanao, Yada, Toru, Fujimura, Akio, Yoshikawa, Makoto, Kawaguchi, Junichiro

“…Regolith particles on the asteroid Itokawa were recovered by the Hayabusa mission. Their three-dimensional (3D) structure and other properties, revealed by…”
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A newly revised estimation of bulk densities and examination of the shape of individual Ryugu grains by Miyazaki, Akiko, Yada, Toru, Yogata, Kasumi, Hatakeda, Kentaro, Nakato, Aiko, Nishimura, Masahiro, Nagashima, Kana, Kumagai, Kazuya, Hitomi, Yuya, Soejima, Hiromichi, Tahara, Rui, Kanemaru, Rei, Nakano, Arisa, Yoshitake, Miwa, Iwamae, Ayako, Furuya, Shizuho, Tsuchiyama, Akira, Tachibana, Shogo, Michikami, Tatsuhiro, Okada, Tatsuaki, Abe, Masanao, Usui, Tomohiro

“…The bulk density of grains from a celestial body is a fundamental property related to its composition and structure, contributing to the understanding of its…”
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High-resolution observations of bright boulders on asteroid Ryugu: 2. Spectral properties by Sugimoto, Chiho, Tatsumi, Eri, Cho, Yuichiro, Morota, Tomokatsu, Honda, Rie, Kameda, Shingo, Yokota, Yosuhiro, Yumoto, Koki, Aoki, Minami, DellaGiustina, Daniella N., Michikami, Tatsuhiro, Hiroi, Takahiro, Domingue, Deborah L., Michel, Patrick, Schröder, Stefan E., Nakamura, Tomoki, Yamada, Manabu, Sakatani, Naoya, Kouyama, Toru, Honda, Chikatoshi, Hayakawa, Masahiko, Matsuoka, Moe, Suzuki, Hidehiko, Yoshioka, Kazuo, Ogawa, Kazunori, Sawada, Hirotaka, Arakawa, Masahiko, Saiki, Takanao, Imamura, Hiroshi, Takagi, Yasuhiko, Yano, Hajime, Shirai, Kei, Okamoto, Chisato, Tsuda, Yuichi, Nakazawa, Satoru, Iijima, Yuichi, Sugita, Seiji

“…Many small boulders with reflectance values higher than 1.5 times the average reflectance have been found on the near-Earth asteroid 162,173 Ryugu. Based on…”
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High-resolution observations of bright boulders on asteroid Ryugu: 1. Size frequency distribution and morphology by Sugimoto, Chiho, Tatsumi, Eri, Cho, Yuichiro, Morota, Tomokatsu, Honda, Rie, Kameda, Shingo, Yokota, Yosuhiro, Yumoto, Koki, Aoki, Minami, DellaGiustina, Daniella N., Michikami, Tatsuhiro, Hiroi, Takahiro, Domingue, Deborah L., Michel, Patrick, Schröder, Stefan E., Nakamura, Tomoki, Yamada, Manabu, Sakatani, Naoya, Kouyama, Toru, Honda, Chikatoshi, Hayakawa, Masahiko, Matsuoka, Moe, Suzuki, Hidehiko, Yoshioka, Kazuo, Ogawa, Kazunori, Sawada, Hirotaka, Arakawa, Masahiko, Saiki, Takanao, Imamura, Hiroshi, Takagi, Yasuhiko, Yano, Hajime, Shirai, Kei, Okamoto, Chisato, Tsuda, Yuichi, Nakazawa, Satoru, Iijima, Yuichi, Sugita, Seiji

“…The near-Earth asteroid (162173) Ryugu displays a Cb-type average spectrum and a very low average normal albedo of 0.04. Although the majority of boulders on…”
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Macroporosity and Grain Density of Rubble Pile Asteroid (162173) Ryugu by Grott, Matthias, Biele, Jens, Michel, Patrick, Sugita, Seiji, Schröder, Stefan, Sakatani, Naoya, Neumann, Wladimir, Kameda, Shingo, Michikami, Tatsuhiro, Honda, Chikatoshi

“…Rubble pile asteroids such as (162173) Ryugu have large bulk porosities, which are believed to result from void spaces in between the constituent boulders…”
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Regolith Migration and Sorting on Asteroid Itokawa by Miyamoto, Hideaki, Yano, Hajime, Scheeres, Daniel J, Abe, Shinsuke, Barnouin-Jha, Olivier, Cheng, Andrew F, Demura, Hirohide, Gaskell, Robert W, Hirata, Naru, Ishiguro, Masateru, Michikami, Tatsuhiro, Nakamura, Akiko M, Nakamura, Ryosuke, Saito, Jun, Sasaki, Sho

“…High-resolution images of the surface of asteroid Itokawa from the Hayabusa mission reveal it to be covered with unconsolidated millimeter-sized and larger…”
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Three-axial shape distributions of pebbles, cobbles and boulders smaller than a few meters on asteroid Ryugu by Michikami, Tatsuhiro, Hagermann, Axel, Morota, Tomokatsu, Yokota, Yasuhiro, Urakawa, Seitaro, Okamura, Hiroyuki, Tanabe, Naoya, Yumoto, Koki, Ebihara, Tatsuki, Cho, Yuichiro, Ernst, Carolyn M., Hayakawa, Masahiko, Hirabayashi, Masatoshi, Hirata, Naru, Honda, Chikatoshi, Honda, Rie, Kameda, Shingo, Kanamaru, Masanori, Kikuchi, Hiroshi, Kikuchi, Shota, Kouyama, Toru, Matsuoka, Moe, Miyamoto, Hideaki, Noguchi, Takaaki, Noguchi, Rina, Ogawa, Kazunori, Okada, Tatsuaki, Sakatani, Naoya, Sasaki, Sho, Sawada, Hirotaka, Sugimoto, Chiho, Suzuki, Hidehiko, Tanaka, Satoshi, Tatsumi, Eri, Tsuchiyama, Akira, Tsuda, Yuichi, Watanabe, Sei-ichiro, Yamada, Manabu, Yoshikawa, Makoto, Yoshioka, Kazuo, Sugita, Seiji

“…Over a broad size range, the shapes of impact fragments from catastrophic disruptions are distributed around the mean axial ratio 2: √2: 1, irrespective of…”
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Site selection for the Hayabusa2 artificial cratering and subsurface material sampling on Ryugu by Kikuchi, Shota, Watanabe, Sei-ichiro, Wada, Koji, Saiki, Takanao, Yabuta, Hikaru, Sugita, Seiji, Abe, Masanao, Arakawa, Masahiko, Cho, Yuichiro, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Chikatoshi, Honda, Rie, Ishibashi, Ko, Ishihara, Yoshiaki, Iwata, Takahiro, Kadono, Toshihiko, Kameda, Shingo, Kitazato, Kohei, Kouyama, Toru, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Morota, Tomokatsu, Nakamura, Tomoki, Nakazawa, Satoru, Namiki, Noriyuki, Noguchi, Rina, Ogawa, Kazunori, Ogawa, Naoko, Okada, Tatsuaki, Ono, Go, Sakatani, Naoya, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Tachibana, Shogo, Takei, Yuto, Tanaka, Satoshi, Tatsumi, Eri, Terui, Fuyuto, Yamada, Manabu, Yamamoto, Yukio, Yokota, Yasuhiro, Yoshikawa, Kent, Yoshikawa, Makoto, Tsuda, Yuichi

“…Hayabusa2 took on the challenge of collecting fresh subsurface samples from asteroid (162173) Ryugu during its second touchdown operation. For this ambitious…”
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Three-dimensional imaging of crack growth in L chondrites after high-velocity impact experiments by Michikami, Tatsuhiro, Hagermann, Axel, Tsuchiyama, Akira, Yamaguchi, Hirotaka, Irie, Terunori, Nomura, Keita, Sasaki, Osamu, Nakamura, Michihiko, Okumura, Satoshi, Hasegawa, Sunao

“…Small asteroids such as Itokawa are covered with an unconsolidated regolith layer of centimeter-sized or smaller particles. There are two plausible formation…”
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Oblique impact cratering experiments in brittle targets: Implications for elliptical craters on the Moon by Michikami, Tatsuhiro, Hagermann, Axel, Morota, Tomokatsu, Haruyama, Junichi, Hasegawa, Sunao

“…Most impact craters observed on planetary bodies are the results of oblique impacts of meteoroids. To date, however, there have only been very few laboratory…”
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Asteroid Ryugu before the Hayabusa2 encounter by Wada, Koji, Grott, Matthias, Michel, Patrick, Walsh, Kevin J., Barucci, Antonella M., Biele, Jens, Blum, Jürgen, Ernst, Carolyn M., Grundmann, Jan Thimo, Gundlach, Bastian, Hagermann, Axel, Hamm, Maximilian, Jutzi, Martin, Kim, Myung-Jin, Kührt, Ekkehard, Le Corre, Lucille, Libourel, Guy, Lichtenheldt, Roy, Maturilli, Alessandro, Messenger, Scott R., Michikami, Tatsuhiro, Miyamoto, Hideaki, Mottola, Stefano, Müller, Thomas, Nakamura, Akiko M., Nittler, Larry R., Ogawa, Kazunori, Okada, Tatsuaki, Palomba, Ernesto, Sakatani, Naoya, Schröder, Stefan E., Senshu, Hiroki, Takir, Driss, Zolensky, Michael E.

“…Asteroid (162173) Ryugu is the target object of Hayabusa2, an asteroid exploration and sample return mission led by Japan Aerospace Exploration Agency (JAXA)…”
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Size-frequency statistics of boulders on global surface of asteroid 25143 Itokawa by Michikami, Tatsuhiro, Nakamura, Akiko M., Hirata, Naru, Gaskell, Robert W., Nakamura, Ryosuke, Honda, Takayuki, Honda, Chikatoshi, Hiraoka, Kensuke, Saito, Jun, Demura, Hirohide, Ishiguro, Masateru, Miyamoto, Hideaki

“…The surface of asteroid 25143 Itokawa is covered with numerous boulders although gravity is very small compared with that of other asteroids previously…”
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A survey of possible impact structures on 25143 Itokawa by Hirata, Naru, Barnouin-Jha, Olivier S., Honda, Chikatoshi, Nakamura, Ryosuke, Miyamoto, Hideaki, Sasaki, Sho, Demura, Hirohide, Nakamura, Akiko M., Michikami, Tatsuhiro, Gaskell, Robert W., Saito, Jun

“…We determined the morphologies and dimensions of possible impact craters on the surface of Asteroid 25143 Itokawa from images taken by the Hayabusa spacecraft…”
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Opposition Observations of 162173 Ryugu: Normal Albedo Map Highlights Variations in Regolith Characteristics by Yokota, Yasuhiro, Honda, Rie, Tatsumi, Eri, Domingue, Deborah, Schröder, Stefan, Matsuoka, Moe, Morota, Tomokatsu, Sakatani, Naoya, Kameda, Shingo, Kouyama, Toru, Yamada, Manabu, Honda, Chikatoshi, Hayakawa, Masahiko, Cho, Yuichiro, Michikami, Tatsuhiro, Suzuki, Hidehiko, Yoshioka, Kazuo, Sawada, Hirotaka, Ogawa, Kazunori, Yumoto, Kouki, Sugita, Seiji

“…Abstract On 2019 January 8, the Telescopic Optical Navigation Camera (ONC-T) on board the Hayabusa2 spacecraft observed the Cb-type asteroid 162173 Ryugu under…”
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Ejecta velocity distribution for impact cratering experiments on porous and low strength targets by Michikami, Tatsuhiro, Moriguchi, Kouichi, Hasegawa, Sunao, Fujiwara, Akira

“…Impact cratering experiments on porous targets with various compressive strength ranging from ∼0.5 to ∼250 MPa were carried out in order to investigate the…”
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Boulder sizes and shapes on asteroids: A comparative study of Eros, Itokawa and Ryugu by Michikami, Tatsuhiro, Hagermann, Axel

“…In order to understand the geological evolution of asteroids Eros, Itokawa and Ryugu and their collisional history, previous studies investigated boulder size…”
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Ejecta size-velocity relation derived from the distribution of the secondary craters of kilometer-sized craters on Mars by Hirase, Yoshiaki, Nakamura, Akiko M., Michikami, Tatsuhiro

“…The relation between the size and velocity of impact crater ejecta has been studied by both laboratory experiments and numerical modeling. An alternative…”
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Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites by Yokoyama, Tetsuya, Nagashima, Kazuhide, Nakai, Izumi, Young, Edward D, Abe, Yoshinari, Aléon, Jérôme, Alexander, Conel M O'D, Amari, Sachiko, Amelin, Yuri, Bajo, Ken-Ichi, Bizzarro, Martin, Bouvier, Audrey, Carlson, Richard W, Chaussidon, Marc, Choi, Byeon-Gak, Dauphas, Nicolas, Davis, Andrew M, Di Rocco, Tommaso, Fujiya, Wataru, Fukai, Ryota, Gautam, Ikshu, Haba, Makiko K, Hibiya, Yuki, Hidaka, Hiroshi, Homma, Hisashi, Hoppe, Peter, Huss, Gary R, Ichida, Kiyohiro, Iizuka, Tsuyoshi, Ireland, Trevor R, Ishikawa, Akira, Ito, Motoo, Itoh, Shoichi, Kawasaki, Noriyuki, Kita, Noriko T, Kitajima, Kouki, Kleine, Thorsten, Komatani, Shintaro, Krot, Alexander N, Liu, Ming-Chang, Masuda, Yuki, McKeegan, Kevin D, Morita, Mayu, Motomura, Kazuko, Moynier, Frédéric, Nguyen, Ann, Nittler, Larry, Onose, Morihiko, Pack, Andreas, Park, Changkun, Piani, Laurette, Qin, Liping, Russell, Sara S, Sakamoto, Naoya, Schönbächler, Maria, Tafla, Lauren, Tang, Haolan, Terada, Kentaro, Terada, Yasuko, Usui, Tomohiro, Wada, Sohei, Wadhwa, Meenakshi, Walker, Richard J, Yamashita, Katsuyuki, Yin, Qing-Zhu, Yoneda, Shigekazu, Yui, Hiroharu, Zhang, Ai-Cheng, Connolly, Jr, Harold C, Lauretta, Dante S, Nakamura, Tomoki, Naraoka, Hiroshi, Noguchi, Takaaki, Okazaki, Ryuji, Sakamoto, Kanako, Yabuta, Hikaru, Abe, Masanao, Arakawa, Masahiko, Fujii, Atsushi, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-Ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kosuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Morota, Tomokatsu, Nakazawa, Satoru

“…Carbonaceous meteorites are thought to be fragments of C-type (carbonaceous) asteroids. Samples of the C-type asteroid (162173) Ryugu were retrieved by the…”
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