Results 31 to 40 of about 3,943 (246)
Derivation of 1.064 μm normal albedos on the C-type asteroid Ryugu from laser pulse intensity measurement of the Hayabusa2 LIDAR
Earth, Planets and Space, 2022 Japanese asteroid explorer Hayabusa2 arrived at C-type asteroid 162,173 Ryugu in June 2018. The laser altimeter (LIDAR) onboard Hayabusa2 measured its own transmitted laser and returned pulse intensities from a Ryugu surface until November 2019.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 +12 moredoaj +1 more sourceMechanical properties of rubble pile asteroids (Dimorphos, Itokawa, Ryugu, and Bennu) through surface boulder morphological analysis. [PDF]
Nat CommunPlanetary defense efforts rely on estimates of the mechanical properties of asteroids, which are difficult to constrain accurately from Earth. The mechanical properties of asteroid material are also important in the interpretation of the Double Asteroid ...Robin CQ, Duchene A, Murdoch N, Vincent JB, Lucchetti A, Pajola M, Ernst CM, Daly RT, Barnouin OS, Raducan SD, Michel P, Hirabayashi M, Stott A, Cuervo G, Jawin ER, Trigo-Rodriguez JM, Parro LM, Sunday C, Vivet D, Mimoun D, Rivkin AS, Chabot NL. +21 moreeuropepmc +2 more sourcesA newly revised estimation of bulk densities and examination of the shape of individual Ryugu grains
Earth, Planets and Space, 2023 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 evolutionary history. In this study, we provide the bulk density of 637 grains returned from the Akiko Miyazaki, 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 Michikami, Tatsuaki Okada, Masanao Abe, Tomohiro Usui +21 moredoaj +1 more sourceNumerical simulations suggest asteroids (101955) Bennu and (162173) Ryugu are likely second or later generation rubble piles. [PDF]
Nat CommunRubble pile asteroids are widely understood to be composed of reaccumulated debris following a catastrophic collision between asteroids in the main asteroid belt, where each disruption can make a family of new asteroids.Walsh KJ, Ballouz RL, Bottke WF, Avdellidou C, Connolly HC, Delbo M, DellaGiustina DN, Jawin ER, McCoy T, Michel P, Morota T, Nolan MC, Schwartz SR, Sugita S, Lauretta DS. +14 moreeuropepmc +2 more sourcesThe Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent Planetesimal
The Planetary Science Journal, 2023 We present oxygen isotopic analyses of fragments of the near-Earth C _b -type asteroid Ryugu returned by the Hayabusa2 spacecraft that reinforce the close correspondence between Ryugu and CI chondrites.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. Carlson, Marc Chaussidon, Byeon-Gak Choi, Nicolas Dauphas, Andrew M. Davis, Wataru Fujiya, Ryota Fukai, Ikshu Gautam, Makiko K. Haba, Yuki Hibiya, Hiroshi Hidaka, Hisashi Homma, Peter Hoppe, Gary R. Huss, Kiyohiro Ichida, Tsuyoshi Iizuka, Trevor R. Ireland, Akira Ishikawa, Motoo Ito, Shoichi Itoh, Noriyuki Kawasaki, Noriko T. Kita, Kouki Kitajima, Thorsten Kleine, Shintaro Komatani, Alexander N. Krot, Ming-Chang Liu, Yuki Masuda, Kevin D. McKeegan, Mayu Morita, Kazuko Motomura, Frédéric Moynier, Kazuhide Nagashima, Izumi Nakai, Ann Nguyen, Larry Nittler, Morihiko Onose, Changkun Park, Laurette Piani, Liping Qin, Sara S. Russell, Naoya Sakamoto, Maria Schönbächler, Kentaro Terada, Yasuko Terada, Tomohiro Usui, Sohei Wada, Meenakshi Wadhwa, Richard J. Walker, Katsuyuki Yamashita, Qing-Zhu Yin, Tetsuya Yokoyama, Shigekazu Yoneda, Hiroharu Yui, Ai-Cheng Zhang, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Ryuji Okazaki, Kanako Sakamoto, Hikaru Yabuta, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tatsuaki Okada, Toru Yada, Kasumi Yogata, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Sei-ichiro Watanabe, Makoto Yoshikawa, Shogo Tachibana, Hisayoshi Yurimoto +89 moredoaj +1 more sourceThermal Infrared Imaging Experiments of C-Type Asteroid 162173 Ryugu on Hayabusa2 [PDF]
, 2016 The thermal infrared imager TIR onboard Hayabusa2 has been developed to investigate thermo-physical properties of C-type, near-Earth asteroid 162173 Ryugu.A. Fujiwara, Axel Hagermann, D.A. Paige, F. Vilas, G.J. Consolmagno, H. Hiesinger, H. Hihara, H. Yano, H.H. Kieffer, H.H. Kieffer, Hirohide Demura, Hiroki Senshu, J. Biele, J. Helbert, J. Veverka, Jun Takita, Jörn Helbert, Ken Endo, Kohei Kitazato, M. Delbo, M. Grott, M. Ishiguro, M.P. Golombek, Makoto Taguchi, Naoya Sakatani, O. Groussin, P. Michel, P.R. Christensen, P.R. Christensen, Ryosuke Nakamura, S. Tachibana, S.C. Chase, Satoshi Tanaka, Sunao Hasegawa, T. Fukuhara, T. Okada, T. Okada, T. Spohn, T.-M. Ho, T.G. Müller, Takehiko Arai, Takehiko Wada, Takeshi Imamura, Tatsuaki Okada, Tetsuya Fukuhara, Thomas G. Müller, Tomohiko Sekiguchi, Toru Kouyama, Tsuneo Matsunaga, W.F. Bottke Jr., Y. Tsuda, Yamato Horikawa, Yoshiko Ogawa +52 morecore +2 more sourcesRare earth element identification and quantification in millimetre-sized Ryugu rock fragments from the Hayabusa2 space mission
Earth, Planets and Space, 2022 Millimetre-sized primordial rock fragments originating from asteroid Ryugu were investigated using high energy X-ray fluorescence spectroscopy, providing 2D and 3D elemental distribution and quantitative composition information on the microscopic level ...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 Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Sei-Ichiro Watanabe, Yuichi Tsuda, Laszlo Vincze +37 moredoaj +1 more sourceTyphoon damage on a shallow mesophotic reef in Okinawa, Japan [PDF]
, 2013 Little is known about effects of large storm systems on mesophotic reefs. This study reports on how Typhoon 17 (Jelawat) affected Ryugu Reef on Okinawa-jima, Japan in September 2012.Bongaerts, Bongaerts, Bridge, Budd, Cheal, Clarke, Denis, Emanuel, Emanuel, Fabricius, Fujita, Gittenberger, Harmelin-Vivien, Harmelin-Vivien, Highsmith, Hoeksema, Hongo, Hughes, Komatsu, Kuo, Laboute, Madin, Ninio, Ohara, Pfeffer, Randall, Richmond, Rogers, Rogers, Trenberth, Tu, Van Woesik, Van Woesik, Veron, Veron, Wallace, Walsh, Webster, Woodley, Yokoyama +39 morecore +1 more sourcePhotometric behavior of Ryugu’s NIR spectral parameters
Astronomy & Astrophysics, 2022 Context. JAXA’s Hayabusa2 mission rendezvoused the Ryugu asteroid for 1.5 years to clarify the carbonaceous asteroids’ record for Solar System origin and evolution. Aims. We studied the photometric behavior of the spectral parameters characterizing the near-infrared (NIR) spectra of Ryugu provided by the Hayabusa2/NIRS3 instrument, that is to say 1.9 ...Longobardo, Andrea, Palomba, E., Galiano, Anna, Dirri, Fabrizio, Zinzi, Angelo, D'Amore, Mario, Domingue, Deborah L., Kitazato, K., Yokota, Y., Schroeder, Stephan, Iwata, T., Matsuoka, M., Hiroi, T., Takir, D., Nakamura, T., Abe, M., Ohtake, M., Matsuura, S., Watanabe, S, Yoshikawa, M., Saiki, T., Okada, T., Tanaka, S., Yamamoto, Y., Takei, Y., Shirai, K., Hirata, N., Hirata, N., Matsumoto, K., Tsuda, T. +29 moreopenaire +2 more sources
