Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu-A spinning top-shaped rubble pile

doi:10.1126/science.aav8032

GSTDTAP > 地球科学

DOI	10.1126/science.aav8032
	Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu-A spinning top-shaped rubble pile
	Watanabe, S.1,2; Hirabayashi, M.3; Hirata, N.4; Hirata, Na.5; Noguchi, R.2; Shimaki, Y.2; Ikeda, H.6; Tatsumi, E.7; Yoshikawa, M.2,8; Kikuchi, S.2; Yabuta, H.9; Nakamura, T.10; Tachibana, S.2,7; Ishihara, Y.2,31; Morota, T.1; Kitazato, K.4; Sakatani, N.2; Matsumoto, K.8,11; Wada, K.12; Senshu, H.12; Honda, C.4; Michikami, T.13; Takeuchi, H.2,8; Kouyama, T.14; Honda, R.15; Kameda, S.16; Fuse, T.17; Miyamoto, H.7; Komatsu, G.12,18; Sugita, S.7; Okada, T.2,7; Namiki, N.8,11; Arakawa, M.5; Ishiguro, M.19; Abe, M.2,8; Gaskell, R.20; Palmer, E.20; Barnouin, O. S.21; Michel, P.22; French, A. S.23; McMahon, J. W.23; Scheeres, D. J.23; Abell, P. A.24; Yamamoto, Y.2,8; Tanaka, S.2,8; Shirai, K.2; Matsuoka, M.2; Yamada, M.12; Yokota, Y.2,15; Suzuki, H.25; Yoshioka, K.7; Cho, Y.7; Tanaka, S.5; Nishikawa, N.5; Sugiyama, T.4; Kikuchi, H.7; Hemmi, R.7; Yamaguchi, T.2,32; Ogawa, N.2; Ono, G.6; Mimasu, Y.2; Yoshikawa, K.6; Takahashi, T.2; Takei, Y.2; Fujii, A.2; Hirose, C.6; Iwata, T.2,8; Hayakawa, M.2; Hosoda, S.2; Mori, O.2; Sawada, H.2; Shimada, T.2; Soldini, S.2; Yano, H.2,8; Tsukizaki, R.2; Ozaki, M.2,8; Iijima, Y.2; Ogawa, K.5; Fujimoto, M.2; Ho, T. -M.26; Moussi, A.27; Jaumann, R.28; Bibring, J. -P.29; Krause, C.30; Terui, F.2; Saiki, T.2; Nakazawa, S.2; Tsuda, Y.2,8
	2019-04-19
发表期刊	SCIENCE
ISSN	0036-8075
EISSN	1095-9203
出版年	2019
卷号	364 期号:6437 页码:268-+
文章类型	Article
语种	英语
国家	Japan; USA; Italy; South Korea; France; Germany
英文摘要	The Hayabusa2 spacecraft arrived at the near-Earth carbonaceous asteroid 162173 Ryugu in 2018. We present Hayabusa2 observations of Ryugu's shape, mass, and geomorphology. Ryugu has an oblate "spinning top" shape, with a prominent circular equatorial ridge. Its bulk density, 1.19 +/- 0.02 grams per cubic centimeter, indicates a high-porosity (> 50%) interior. Large surface boulders suggest a rubble-pile structure. Surface slope analysis shows Ryugu's shape may have been produced from having once spun at twice the current rate. Coupled with the observed global material homogeneity, this suggests that Ryugu was reshaped by centrifugally induced deformation during a period of rapid rotation. From these remote-sensing investigations, we identified a suitable sample collection site on the equatorial ridge.
领域	地球科学 ; 气候变化 ; 资源环境
收录类别	SCI-E
WOS记录号	WOS:000464956600046
WOS关键词	SURFACE ; SAMPLES ; ITOKAWA ; MISSION ; ONBOARD ; ORIGIN ; CAMERA ; RADAR
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/201243
专题	地球科学资源环境科学气候变化
作者单位	1.Nagoya Univ, Nagoya, Aichi 4648601, Japan; 2.Japan Aerosp Explorat Agcy JAXA, ISAS, Sagamihara, Kanagawa 2525210, Japan; 3.Auburn Univ, Auburn, AL 36849 USA; 4.Univ Aizu, Aizu Wakamatsu, Fukushima 9658580, Japan; 5.Kobe Univ, Kobe, Hyogo 6578501, Japan; 6.JAXA, Res & Dev Directorate, Sagamihara, Kanagawa 2525210, Japan; 7.Univ Tokyo, Tokyo 1130033, Japan; 8.Grad Univ Adv Studies, SOKENDAI, Hayama 2400193, Japan; 9.Hiroshima Univ, Higashihiroshima 7398526, Japan; 10.Tohoku Univ, Sendai, Miyagi 9808578, Japan; 11.Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan; 12.Chiba Inst Technol, Narashino, Chiba 2750016, Japan; 13.Kindai Univ, Higashihiroshima 7392116, Japan; 14.Natl Inst Adv Ind Sci & Technol, Tokyo 1350064, Japan; 15.Kochi Univ, Kochi 7808520, Japan; 16.Rikkyo Univ, Tokyo 1718501, Japan; 17.Natl Inst Informat & Commun Technol, Kashima 3148501, Japan; 18.Univ Annunzio, I-65127 Pescara, Italy; 19.Seoul Natl Univ, Seoul 08826, South Korea; 20.Planetary Sci Inst, Tucson, AZ 85710 USA; 21.Johns Hopkins Univ, Appl Phys Lab, Johns Hopkins Rd, Laurel, MD 20707 USA; 22.Univ Cote Azur, Observ Cote Azur, CNRS, Lab Lagrange, F-06304 Nice, France; 23.Univ Colorado, Boulder, CO 80309 USA; 24.NASA, Johnson Space Ctr, Houston, TX 77058 USA; 25.Meiji Univ, Kawasaki, Kanagawa 2148571, Japan; 26.DLR German Aerosp Ctr, Inst Space Syst, D-28359 Bremen, Germany; 27.CNES, F-31401 Toulouse, France; 28.Inst Planetary Res, DLR, D-12489 Berlin, Germany; 29.Inst Astrophys Spatiale, F-91405 Orsay, France; 30.Micrograv User Support Ctr, DLR, D-51147 Cologne, Germany; 31.Natl Inst Environm Studies, Tsukuba, Ibaraki 3058506, Japan; 32.Mitsubishi Electr Corp, Kamakura, Kanagawa 2478520, Japan
推荐引用方式 GB/T 7714	Watanabe, S.,Hirabayashi, M.,Hirata, N.,et al. Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu-A spinning top-shaped rubble pile[J]. SCIENCE,2019,364(6437):268-+.
APA	Watanabe, S..,Hirabayashi, M..,Hirata, N..,Hirata, Na..,Noguchi, R..,...&Tsuda, Y..(2019).Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu-A spinning top-shaped rubble pile.SCIENCE,364(6437),268-+.
MLA	Watanabe, S.,et al."Hayabusa2 arrives at the carbonaceous asteroid 162173 Ryugu-A spinning top-shaped rubble pile".SCIENCE 364.6437(2019):268-+.