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Statements

Subject Item
n2:RIV%2F67985831%3A_____%2F11%3A00367277%21RIV12-AV0-67985831
rdf:type
n12:Vysledek skos:Concept
dcterms:description
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. 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.
dcterms:title
Internal structure and physical properties of the Asteroid 2008 TC(3) inferred from a study of the Almahata Sitta meteorites Internal structure and physical properties of the Asteroid 2008 TC(3) inferred from a study of the Almahata Sitta meteorites
skos:prefLabel
Internal structure and physical properties of the Asteroid 2008 TC(3) inferred from a study of the Almahata Sitta meteorites Internal structure and physical properties of the Asteroid 2008 TC(3) inferred from a study of the Almahata Sitta meteorites
skos:notation
RIV/67985831:_____/11:00367277!RIV12-AV0-67985831
n12:predkladatel
n19:ico%3A67985831
n4:aktivita
n14:Z
n4:aktivity
Z(AV0Z10030501), Z(AV0Z30130516)
n4:cisloPeriodika
2
n4:dodaniDat
n11:2012
n4:domaciTvurceVysledku
n18:2134616
n4:druhVysledku
n17:J
n4:duvernostUdaju
n16:S
n4:entitaPredkladatele
n15:predkladatel
n4:idSjednocenehoVysledku
205401
n4:idVysledku
RIV/67985831:_____/11:00367277
n4:jazykVysledku
n9:eng
n4:klicovaSlova
asteroid; 2008TC3; meteorite; Near-Earth objects
n4:klicoveSlovo
n5:asteroid n5:Near-Earth%20objects n5:meteorite n5:2008TC3
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[69162194D61F]
n4:nazevZdroje
Icarus
n4:obor
n10:BN
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
7
n4:rokUplatneniVysledku
n11:2011
n4:svazekPeriodika
212
n4:tvurceVysledku
Scheirich, Peter Britt, D. Montonen, M. Macke, R. Consolmagno, G. Kiuru, R. Kohout, Tomáš
n4:wos
000289178100021
n4:zamer
n7:AV0Z10030501 n7:AV0Z30130516
s:issn
0019-1035
s:numberOfPages
4
n13:doi
10.1016/j.icarus.2011.01.037