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Internal structure and physical properties of the Asteroid 2008 TC.sub.3./sub. inferred from a study of the Almahata Sitta meteorites
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SYSNO ASEP 0367277 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Internal structure and physical properties of the Asteroid 2008 TC3 inferred from a study of the Almahata Sitta meteorites Author(s) Kohout, Tomáš (GLU-S) RID, SAI, ORCID
Kiuru, R. (FI)
Montonen, M. (FI)
Scheirich, Peter (ASU-R) RID, ORCID
Britt, D. (US)
Macke, R. (US)
Consolmagno, G. (VA)Source Title Icarus. - : Elsevier - ISSN 0019-1035
Roč. 212, č. 2 (2011), s. 697-700Number of pages 4 s. Publication form WWW - WWW Language eng - English Country US - United States Keywords asteroid ; 2008TC3 ; meteorite ; Near-Earth objects Subject RIV BN - Astronomy, Celestial Mechanics, Astrophysics CEZ AV0Z30130516 - GLU-S (2005-2011) AV0Z10030501 - ASU-R (2005-2011) UT WOS 000289178100021 EID SCOPUS 79952901455 DOI 10.1016/j.icarus.2011.01.037 Annotation The density measurements of Almahata Sitta ureilites reveal a bulk density of ~ 3.1 g/cm3. This value, together with the 2008 TC3 asteroid shape model and albedo, was used to estimate the asteroid’s mass. Based on the study of recovered meteorites and the atmospheric entry observations the asteroid 2008 TC3 is compositionally heterogeneous and of low mechanical strength. Thus we consider the presence of significant macroporosity likely, lowering asteroid’s bulk density compared to that of the Almahata Sitta ureilites. Most realistic albedos lie in a range of 0.09 0.2 and the presence of significant macroporosity leads to mass estimates below 20 x 103 kg, which is lower than previously estimated. The presence of a non ureilitic fraction and space weathering may affect the albedo and also influence the mass estimates. However, from current data it is not possible to quantify this effect. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2012
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