On the origin of the Almahata Sitta meteorite and asteroid 2008TC3

Details On the origin of the Almahata Sitta meteorite and asteroid 2008TC3 On the origin of the Almahata Sitta meteorite and asteroid 2008TC3

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..915g&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.915

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Scientific paper

Asteroid 2008 TC3 is a Near Earth Asteroid (NEA) that impacted the Earth on October 7, 2008 [5]. At present, about 600 meteorites - called Almahata Sitta - coming from 2008 TC3 have been recovered [9] from the same strewn field. A mineralogical study of Almahata Sitta fragments shows that the asteroid 2008 TC3 was consisting of meteorites of different types (H, L, E chondrites and urelites). Understanding the origin of this body and how it was put together remain a challenge. Here we perform a detailed spectroscopical and dynamical investigation to show that the most likely source region of Almahata Sitta and 2008 TC3 is in the inner Main-Belt at low inclination where the socalled Nysa-Polana family is located. We also provide a workable explanation about how asteroid 2008 TC3 was formed by low velocity collisions between asteroid fragments of very different mineralogies.

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