The thermal and physical characteristics of the Gao-Guenie (H5) meteorite

Measurements of the bulk density, grain density, porosity, and magnetic susceptibility of 19 Gao-Guenie H5 chondrite meteorite samples are presented. We find average values of bulk density 〈 ρ bulk〉=3.46±0.07 g/cm 3, grain density 〈 ρ grain〉=3.53±0.08 g/cm 3, porosity 〈 P(%)〉=2.46±1.39, and bulk mas...

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Published inPlanetary and space science Vol. 57; no. 7; pp. 764 - 770
Main Authors Beech, Martin, Coulson, Ian M., Nie, Wenshuang, McCausland, Phil
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.06.2009
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Summary:Measurements of the bulk density, grain density, porosity, and magnetic susceptibility of 19 Gao-Guenie H5 chondrite meteorite samples are presented. We find average values of bulk density 〈 ρ bulk〉=3.46±0.07 g/cm 3, grain density 〈 ρ grain〉=3.53±0.08 g/cm 3, porosity 〈 P(%)〉=2.46±1.39, and bulk mass magnetic susceptibility 〈log χ〉=5.23±0.11. Measurements of the specific heat capacity for a 3.01-g Gao-Guenie sample, a 61.37-g Gao-Guenie sample, a 62.35-g Jilin H5 chondrite meteorite sample, and a 51.37-g Sikhote-Alin IIAB Iron meteorite sample are also presented. Temperature interpolation formula are further provided for the specific heat capacity, thermal conductivity, and thermal diffusivity of the 3.01-g Gao-Guenie sample in the temperature range 300< T (K)<800. We briefly review the possible effects of the newly deduced specific heat and thermal conductivity values on the ablation of meteoroids within the Earth's atmosphere, the modeling of asteroid interiors and the orbital evolution of meteoroids through the Yarkovsky-O’Keefe-Radzievskii-Paddack (YORP) effect.
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ISSN:0032-0633
1873-5088
DOI:10.1016/j.pss.2009.01.002