Arid
DOI10.1111/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
ISSN1086-9379
EISSN1945-5100
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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