The Ginger-shaped Asteroid 4179 Toutatis: New Observations from a Successful Flyby of Chang'e-2

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	The Ginger-shaped Asteroid 4179 Toutatis: New Observations from a Successful Flyby of Chang'e-2
	Huang, JC 1,3; Ji, JH 2; Ye, PJ 1; Wang, XL 4; Yan, J 5; Meng, LZ 3; Wang, S 2; Li, CL 5; Li, Y 6; Qiao, D 7
刊名	SCIENTIFIC REPORTS
	2013-12
卷号	3
ISSN号	2045-2322
通讯作者	Huang, JC (reprint author), China Acad Space Technol, Beijing 100094, Peoples R China.
产权排序	第十三完成单位
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.
学科主题	Science & Technology - Other Topics
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
原文出处	http://www.nature.com/articles/srep03411
语种	英语
WOS记录号	WOS:000328503100001
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5425]
专题	云南天文台_丽江天文观测站（南方基地）
作者单位	1.China Academy of Space Technology, Beijing 100094, China 2.Key Laboratory of Planetary Sciences, Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008, China 3.Institute of Space System Engineering, Beijing 100094, China 4.Beijing Institute of Control Engineering, Beijing 100190, China 5.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China 6.Space Science Institute, Macau University of Science and Technology, Taipa, Macau 7.Beijing Institute of Technology, Beijing 100081, China 8.Harbin Institute of Technology, Harbin 150001, China 9.School of Electronic Engineering and Computer Science, Peking University, Beijing 100871, China 10.Beijing Institute of Space Mechanics and Electricity, Beijing 100076, China
推荐引用方式 GB/T 7714	Huang, JC,Ji, JH,Ye, PJ,et al. The Ginger-shaped Asteroid 4179 Toutatis: New Observations from a Successful Flyby of Chang'e-2[J]. SCIENTIFIC REPORTS,2013,3.
APA	Huang, JC.,Ji, JH.,Ye, PJ.,Wang, XL.,Yan, J.,...&Bai JM.(2013).The Ginger-shaped Asteroid 4179 Toutatis: New Observations from a Successful Flyby of Chang'e-2.SCIENTIFIC REPORTS,3.
MLA	Huang, JC,et al."The Ginger-shaped Asteroid 4179 Toutatis: New Observations from a Successful Flyby of Chang'e-2".SCIENTIFIC REPORTS 3(2013).