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题名: The Ginger-shaped Asteroid 4179 Toutatis: New Observations from a Successful Flyby of Chang'e-2
作者: Huang, Jiangchuan1, 3; Ji JiangHui(季江徽)2; Ye, Peijian1; Wang, Xiaolei4; Yan, Jun5; Meng, Linzhi3; Wang Su(王素)2; Li, Chunlai5; Li, Yuan6; Qiao, Dong7; Zhao, Wei8; Zhao YuHui(赵玉晖)2; Zhang, Tingxin1; Liu, Peng8; Jiang Yun(蒋云)2; Rao, Wei3; Li Sheng(李升)9; Huang, Changning10; Ip, Wing-Huen6, 11; Hu ShouCun(胡寿村)2; Zhu, Menghua6; Yu LiangLiang(余亮亮)2; Zou, Yongliao5; Tang, Xianglong8; Li, Jianyang12; Zhao HaiBin(赵海斌)2; Huang, Hao3; Jiang, Xiaojun5; Bai, Jinming13
刊名: SCIENTIFIC REPORTS
出版日期: 2013-12-12
卷号: 3
DOI: 10.1038/srep03411
文章类型: Article
英文摘要: On 13 December 2012, Chang'e-2 conducted a successful flyby of the near-Earth asteroid 4179 Toutatis at a closest distance of 770 +/- 120 meters from the asteroid's surface. The highest-resolution image, with a resolution of better than 3 meters, reveals new discoveries on the asteroid, e. g., a giant basin at the big end, a sharply perpendicular silhouette near the neck region, and direct evidence of boulders and regolith, which suggests that Toutatis may bear a rubble-pile structure. Toutatis' maximum physical length and width are (4.75 x 1.95 km) +/- 10%, respectively, and the direction of the +z axis is estimated to be (250 +/- 5 degrees, 63 +/- 5 degrees) with respect to the J2000 ecliptic coordinate system. The bifurcated configuration is indicative of a contact binary origin for Toutatis, which is composed of two lobes (head and body). Chang'e-2 observations have significantly improved our understanding of the characteristics, formation, and evolution of asteroids in general.
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: RADAR OBSERVATIONS ; BINARY ASTEROIDS ; PHYSICAL MODEL ; CONTACT BINARY ; SPIN STATES ; 21 LUTETIA ; INERTIA ; IMAGES ; EROS
收录类别: SCI
语种: 英语
WOS记录号: WOS:000328503100001
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15513
Appears in Collections:行星科学与深空探测实验室_期刊论文

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作者单位: 1.China Acad Space Technol, Beijing 100094, Peoples R China
2.Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China
3.Inst Space Syst Engn, Beijing 100094, Peoples R China
4.Beijing Inst Control Engn, Beijing 100190, Peoples R China
5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
6.Macau Univ Sci & Technol, Space Sci Inst, Taipa, Macau, Peoples R China
7.Beijing Inst Technol, Beijing 100081, Peoples R China
8.Harbin Inst Technol, Harbin 150001, Peoples R China
9.Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China
10.Beijing Inst Space Mech & Elect, Beijing 100076, Peoples R China
11.Natl Cent Univ, Inst Astron, Tao Yuan, Taiwan
12.Planetary Sci Inst, Tucson, AZ 85719 USA
13.Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China
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