The Berduc L6 chondrite fall: Meteorite characterization,trajectory, and orbital elements |
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| Authors: | Josep M TRIGO‐RODRÍGUEZ Jordi LLORCA José M MADIEDO Gonzalo TANCREDI Wayne N EDWARDS Alan E RUBIN Patrick WEBER |
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| Institution: | 1. Institute of Space Sciences‐CSIC, Campus UAB, Facultat de Ciències, Torre C5‐parell, 2a, 08193 Bellaterra, Spain;2. Institut d’Estudis Espacials de Catalunya, Gran Capità 2‐4, Ed. Nexus, 08034 Barcelona, Spain;3. Institut de Tècniques Energètiques, Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain;4. Facultad de Ciencias Experimentales. Universidad de Huelva, 21071 Huelva, Spain;5. Departamento de Astronomía, Facultad de Ciencias (DAFC), Iguá 4225, 11400 Montevideo, Uruguay;6. Natural Resources Canada, Atlantic and Western Canada Branch, Canadian Hazards and Information Service, Earth Sciences Sector, 7 Observatory Crescent, Ottawa, Ontario, Canada K1A 0Y3;7. Institute of Geophysics and Planetary Physics, University of California Los Angeles (UCLA), Los Angeles, California 90095–1567, USA;8. Laboratory for High Energy Physics, University of Bern, Sidlerstrasse 5, CH‐3012 Bern, Switzerland |
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| Abstract: | Abstract– The fall of the Berduc meteorite took place on April 7, 2008, at 01 h 02 min 28 s ± 1 s UTC. A daylight fireball was witnessed by hundreds of people from Argentina and Uruguay, and also recorded by an infrasound array in Paraguay. From the available data, the fireball trajectory and radiant have been reconstructed with moderate accuracy. The modeled trajectory was tested to fit the infrasound and strewn field data. From the computed apparent radiant α = 87 ± 2° and δ = ?11 ± 2° and taking into account a range of plausible initial velocities, we obtained a range of orbital solutions. All of them suggest that the progenitor meteoroid originated from the main asteroid belt and followed an orbit of low inclination. Based on petrography, mineral chemistry, magnetic susceptibility, and bulk chemistry, the Berduc meteorite is classified as an L6 ordinary chondrite. |
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