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 experimental conditions and target materials. Although most blocks on asteroids are likely ...
S. Tachibana H. Sawada R. Okazaki Y. Takano K. Sakamoto Y. N. Miura C. Okamoto H. Yano S. Yamanouchi P. Michel Y. Zhang S. Schwartz F. Thuillet H. Yurimoto T. Nakamura T. Noguchi H. Yabuta H. Naraoka A. Tsuchiyama N. Imae K. Kurosawa A. M. Nakamura K. Ogawa S. Sugita T. Morota R. Honda S. Kameda E. Tatsumi Y. Cho K. Yoshioka Y. Yokota M. Hayakawa M. Matsuoka N. Sakatani M. Yamada T. Kouyama H. Suzuki C. Honda T. Yoshimitsu T. Kubota H. Demura T. Yada M. Nishimura K. Yogata A. Nakato M. Yoshitake A. I. Suzuki S. Furuya K. Hatakeda A. Miyazaki K. Kumagai T. Okada M. Abe T. Usui T. R. Ireland M. Fujimoto T. Yamada M. Arakawa H. C. Connolly A. Fujii S. Hasegawa N. Hirata N. Hirata C. Hirose S. Hosoda Y. Iijima H. Ikeda M. Ishiguro Y. Ishihara T. Iwata S. Kikuchi K. Kitazato D. S. Lauretta G. Libourel B. Marty K. Matsumoto T. Michikami Y. Mimasu A. Miura O. Mori K. Nakamura-Messenger N. Namiki A. N. Nguyen L. R. Nittler H. Noda R. Noguchi N. Ogawa G. Ono M. Ozaki H. Senshu T. Shimada Y. Shimaki K. Shirai S. Soldini T. Takahashi Y. Takei H. Takeuchi R. Tsukizaki K. Wada Y. Yamamoto K. Yoshikawa K. Yumoto M. E. Zolensky S. Nakazawa F. Terui S. Tanaka T. Saiki M. Yoshikawa S. Watanabe Y. Tsuda
Science 375(6584) 1011-1016 2022年3月 [査読有り]
The Hayabusa2 spacecraft investigated the C-type (carbonaceous) asteroid (162173) Ryugu. The mission performed two landing operations to collect samples of surface and subsurface material, the latter exposed by an artificial impact. We present ima...
<title>Abstract</title>Ryugu is a carbonaceous rubble-pile asteroid visited by the Hayabusa2 spacecraft. Small rubble pile asteroids record the thermal evolution of their much larger parent bodies. However, recent space weathering and/or solar hea...
The Planetary Science Journal 2(5) 177-177 2021年10月 [査読有り]
<title>Abstract</title>
On 2019 January 8, the Telescopic Optical Navigation Camera (ONC-T) on board the Hayabusa2 spacecraft observed the Cb-type asteroid 162173 Ryugu under near-opposition illumination and viewing conditions from approximately ...
Naoya Tanabe Yuichiro Cho Eri Tatsumi Tatsuki Ebihara Koki Yumoto Tatsuhiro Michikami Hideaki Miyamoto Tomokatsu Morota Chikatoshi Honda Patrick Michel Katharina Otto Olivier Barnouin Kazuo Yoshioka Hirotaka Sawada Yasuhiro Yokota Naoya Sakatani Masahiro Hayakawa Rie Honda Shingo Kameda Moe Matsuoka Manabu Yamada Toru Kouyama Hidehiko Suzuki Kazunori Ogawa Seiji Sugita
Planetary and Space Science 204 105249-105249 2021年9月 [査読有り]
Recent asteroid missions have revealed that many sub-kilometer asteroids are rubble piles. Large parts of their surfaces are covered with boulders larger than tens of centimeters. An evaluation of the abundance and size distribution of boulders pr...
Y. Yokota R. Honda D. Domingue E. Tatsumi S. E. Schröder M. Matsuoka L. Riu A. Longobardo S. Sugita T. Morota N. Sakatani C. Honda Y. Cho S. Kameda T. Kouyama M. Yamada M. Hayakawa H. Senshu H. Suzuki K. Yoshioka H. Sawada K. Ogawa K. Yumoto
K. Honda E. Tatsumi Y. Yokota D. Shoji S. Sugita R. Honda T. Morota S. Kameda H. Sawada M. Yamada T. Kouyama H. Suzuki Y. Cho N. Sakatani M. Matsuoka M. Hayakawa K. Yumoto C, Honda K. Ogawa K. Yoshioka S. Murakami H. Sato
N. Sakatani S. Kameda K. Kitsunai H. Kikuchi S. Kikuchi Y. Takei Y. Mimasu T Kouyama T. Morota H. Sawada R. Honda Y. Cho M. Hayakawa C. Honda M. Matsuoka K. Ogawa H Suzuki E. Tatsumi M. Yamada Y. Yokota K. Yoshioka S. Tanaka T. Okada T. Arai H. Demura T Sekiguchi H. Senshu Y. Shimaki M. Kanamaru S. Sugita
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