Meteosat observation of the atmospheric entry of 2008 TC3 over Sudan and the associated dust cloud

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F09%3A00332789" target="_blank" >RIV/67985815:_____/09:00332789 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00020699:_____/09:#0000633

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Meteosat observation of the atmospheric entry of 2008 TC3 over Sudan and the associated dust cloud

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Meteosat observation of the atmospheric entry of 2008 TC3 over Sudan and the associated dust cloud

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/IAA300030813" target="_blank" >IAA300030813: Záření vzduchu ve spektrech meteorů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

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Svazek periodika

507

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

00272029000044

EID výsledku v databázi Scopus

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