Iron meteorites as remnants of planetesimals formed in the terrestrial planet region

William F. Bottke (), David Nesvorný, Robert E. Grimm, Alessandro Morbidelli and David P. O'Brien
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William F. Bottke: Southwest Research Institute
David Nesvorný: Southwest Research Institute
Robert E. Grimm: Southwest Research Institute
Alessandro Morbidelli: Observatoire de la Côte d'Azure
David P. O'Brien: Observatoire de la Côte d'Azure

Nature, 2006, vol. 439, issue 7078, 821-824

Abstract: Meteorites with a history Most iron meteorites come from the main asteroid belt, but the available evidence does not tell us whether their parent bodies actually formed there. A combination of thermal, collisional and dynamical models has been used to show that the iron-meteorite parent bodies probably formed closer to the Sun, in the terrestrial planet region. These precursors then melted and fragments were scattered into the main belt early in Solar System history. Some asteroids today, such as the geologically diverse Vesta, are likely to be main-belt interlopers. And this scenario suggests that the main belt may also contain long-lost precursors of Solar System planets.

Date: 2006
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DOI: 10.1038/nature04536

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