PMO OpenIR  > 行星科学与深空探测实验室
Boulders on asteroid Toutatis as observed by Chang'e-2
Jiang, Yun1; Ji, Jianghui1; Huang, Jiangchuan2; Marchi, Simone3; Li, Yuan4; Ip, Wing-Huen4,5
2015-11-02
Source PublicationSCIENTIFIC REPORTS
Volume5
AbstractBoulders are ubiquitously found on the surfaces of small rocky bodies in the inner solar system and their spatial and size distributions give insight into the geological evolution and collisional history of the parent bodies. Using images acquired by the Chang'e-2 spacecraft, more than 200 boulders have been identified over the imaged area of the near-Earth asteroid Toutatis. The cumulative boulder size frequency distribution (SFD) shows a steep slope of -4.4 +/- 0.1, which is indicative of a high degree of fragmentation. Similar to Itokawa, Toutatis probably has a rubble-pile structure, as most boulders on its surface cannot solely be explained by impact cratering. The significantly steeper slope for Toutatis' boulder SFD compared to Itokawa may imply a different preservation state or diverse formation scenarios. In addition, the cumulative crater SFD has been used to estimate a surface crater retention age of approximately 1.6 +/- 0.3 Gyr.
WOS HeadingsScience & Technology
DOI10.1038/srep16029
WOS KeywordEJECTA BLOCKS ; SPIN-STATE ; HAYABUSA ; ITOKAWA ; IMAGES ; CRATER ; IMPACT ; SIZE ; 25143-ITOKAWA ; REGOLITH
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000363878100001
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/16042
Collection行星科学与深空探测实验室
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210008, Peoples R China
2.China Acad Space Technol, Beijing 100094, Peoples R China
3.Southwest Res Inst, Boulder, CO 80302 USA
4.Macau Univ Sci & Technol, Space Sci Inst, Taipa, Macau, Peoples R China
5.Natl Cent Univ, Inst Astron, Taoyuan, Taiwan
Recommended Citation
GB/T 7714
Jiang, Yun,Ji, Jianghui,Huang, Jiangchuan,et al. Boulders on asteroid Toutatis as observed by Chang'e-2[J]. SCIENTIFIC REPORTS,2015,5.
APA Jiang, Yun,Ji, Jianghui,Huang, Jiangchuan,Marchi, Simone,Li, Yuan,&Ip, Wing-Huen.(2015).Boulders on asteroid Toutatis as observed by Chang'e-2.SCIENTIFIC REPORTS,5.
MLA Jiang, Yun,et al."Boulders on asteroid Toutatis as observed by Chang'e-2".SCIENTIFIC REPORTS 5(2015).
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