High Porosity and Cosmic-Ray Exposure Age of Asteroid 2008 TC3 Derived from Cosmogenic Nuclides
Abstract
Cosmogenic radionuclides in the Almahata Sitta ureilite, combined with measured size of 28 m3, indicate that asteroid 2008 TC3 had a density of 1.5 g/cm3 and a porosity of 55%. Cosmogenic noble gas concentrations indicate a cosmic-ray exposure age of 15 Myr.
- Publication:
-
41st Annual Lunar and Planetary Science Conference
- Pub Date:
- March 2010
- Bibcode:
- 2010LPI....41.2256W