Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1945-5100.2010.01116.x |
The recovery of asteroid 2008 TC3 | |
Shaddad, Muawia H.2; Jenniskens, Peter1; Numan, Diyaa2; Kudoda, Ayman M.2; Elsir, Saadia3; Riyad, Ihab F.2; Ali, Awad Elkareem4; Alameen, Mohammed2; Alameen, Nada M.2; Eid, Omer2; Osman, Ahmed T.2; AbuBaker, Mohamed I.2; Yousif, Mohamed2; Chesley, Steven R.5; Chodas, Paul W.5; Albers, Jim1; Edwards, Wayne N.6,7; Brown, Peter G.6; Kuiper, Jacob8; Friedrich, Jon M.9,10 | |
通讯作者 | Jenniskens, Peter |
来源期刊 | METEORITICS & PLANETARY SCIENCE
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ISSN | 1086-9379 |
EISSN | 1945-5100 |
出版年 | 2010 |
卷号 | 45期号:10-11页码:1557-1589 |
英文摘要 | On October 7, 2008, asteroid 2008 TC3 impacted Earth and fragmented at 37 km altitude above the Nubian Desert in northern Sudan. The area surrounding the asteroid’s approach path was searched, resulting in the first recovery of meteorites from an asteroid observed in space. This was also the first recovery of remains from a fragile "cometary" PE = IIIa/b type fireball. In subsequent searches, over 600 mostly small 0.2-379 g meteorites (named "Almahata Sitta") with a total mass 10.7 kg were recovered from a 30 x 7 km area. Meteorites fell along the track at 1.3 kg km-1, nearly independent of mass between 1 and 400 g, with a total fallen mass of 39 +/- 6 kg. The strewn field was shifted nearly 1.8 km south from the calculated approach path. The influence of winds on the distribution of the meteorites, and on the motion of the dust train, is investigated. The majority of meteorites are ureilites with densities around 2.8 g cm-3, some of an anomalous (porous, high in carbon) polymict ureilite variety with densities as low as 1.5 g cm-3. In addition, an estimated 20-30% (in mass) of recovered meteorites were ordinary, enstatite, and carbonaceous chondrites. Their fresh look and matching distribution of fragments in the strewn field imply that they were part of 2008 TC3. For that reason, they are all referred to as "Almahata Sitta." No ureilite meteorites were found that still held foreign clasts, suggesting that the asteroid’s clasts were only loosely bound. |
类型 | Article |
语种 | 英语 |
国家 | USA ; Sudan ; Canada ; Netherlands |
收录类别 | SCI-E |
WOS记录号 | WOS:000285759700002 |
WOS关键词 | TAGISH LAKE METEORITE ; FALL ; DYNAMICS ; ORBIT |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/165657 |
作者单位 | 1.Carl Sagan Ctr, SETI Inst, Mountain View, CA 94043 USA; 2.Univ Khartoum, Dept Phys, Khartoum 11115, Sudan; 3.Juba Univ, Dept Phys, Khartoum 11115, Juba, Sudan; 4.Univ Khartoum, Dept Chem, Khartoum 11115, Sudan; 5.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA; 6.Univ Western Ontario, Dept Phys & Astron, London, ON N6A 3K7, Canada; 7.Nat Resources Canada, Canadian Hazards Informat Serv, Ottawa, ON K1A 0Y3, Canada; 8.Royal Netherlands Meteorol Inst, NL-3732 GK De Bilt, Netherlands; 9.Fordham Univ, Dept Chem, Bronx, NY 10458 USA; 10.Amer Museum Nat Hist, Dept Earth & Planetary Sci, New York, NY 10025 USA |
推荐引用方式 GB/T 7714 | Shaddad, Muawia H.,Jenniskens, Peter,Numan, Diyaa,et al. The recovery of asteroid 2008 TC3[J],2010,45(10-11):1557-1589. |
APA | Shaddad, Muawia H..,Jenniskens, Peter.,Numan, Diyaa.,Kudoda, Ayman M..,Elsir, Saadia.,...&Friedrich, Jon M..(2010).The recovery of asteroid 2008 TC3.METEORITICS & PLANETARY SCIENCE,45(10-11),1557-1589. |
MLA | Shaddad, Muawia H.,et al."The recovery of asteroid 2008 TC3".METEORITICS & PLANETARY SCIENCE 45.10-11(2010):1557-1589. |
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