Meteosat observation of the atmospheric entry of 2008 TC3 over Sudan and the associated dust cloud
Result description
We analyzed serendipitous observations by the Meteosat 8 weather satellite of the fireball caused by the entry of the small asteroid 2008 TC3 over northern Sudan on October 7, 2008. We measured the brightness of the fireball at two heights as well as thespectra of the fireball and of the dust cloud deposited in the atmosphere. Infrared spectra of the fresh dust clouds were dominated by the 10 micron Si-O band caused by recondensed amorphous silicates. The total mass of the silicate smoke was estimatedto be 3100 cca 600 kg. More mass was probably contained in larger, micron sized, dust particles resulting from incomplete sublimation of the asteroidal material. Based on the heights of asteroid fragmentations, we guess that the bulk porosity of 2008 TC3was of the order of 50%, i.e. higher than the porosity of the recovered meteorite Almahata Sitta.
Keywords
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/00020699:_____/09:#0000633
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Meteosat observation of the atmospheric entry of 2008 TC3 over Sudan and the associated dust cloud
Original language description
We analyzed serendipitous observations by the Meteosat 8 weather satellite of the fireball caused by the entry of the small asteroid 2008 TC3 over northern Sudan on October 7, 2008. We measured the brightness of the fireball at two heights as well as thespectra of the fireball and of the dust cloud deposited in the atmosphere. Infrared spectra of the fresh dust clouds were dominated by the 10 micron Si-O band caused by recondensed amorphous silicates. The total mass of the silicate smoke was estimatedto be 3100 cca 600 kg. More mass was probably contained in larger, micron sized, dust particles resulting from incomplete sublimation of the asteroidal material. Based on the heights of asteroid fragmentations, we guess that the bulk porosity of 2008 TC3was of the order of 50%, i.e. higher than the porosity of the recovered meteorite Almahata Sitta.
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy and Astrophysics
ISSN
0004-6361
e-ISSN
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Volume of the periodical
507
Issue of the periodical within the volume
2
Country of publishing house
FR - FRANCE
Number of pages
8
Pages from-to
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UT code for WoS article
00272029000044
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BN - Astronomy and celestial mechanics, astrophysics
Year of implementation
2009