The Berduc L6 chondrite fall: meteorite characterization, trajectory, and orbital elements

摘要

Abstract–The fall of the Berduc meteorite took place on April 7, 2008, at 01 h 02 min\ud28 s ± 1 s UTC. A daylight fireball was witnessed by hundreds of people from Argentina\udand Uruguay, and also recorded by an infrasound array in Paraguay. From the available\uddata, the fireball trajectory and radiant have been reconstructed with moderate accuracy.\udThe modeled trajectory was tested to fit the infrasound and strewn field data. From the\udcomputed apparent radiant a = 87 ± 2 and d = )11 ± 2 and taking into account a\udrange of plausible initial velocities, we obtained a range of orbital solutions. All of them\udsuggest that the progenitor meteoroid originated from the main asteroid belt and followed\udan orbit of low inclination. Based on petrography, mineral chemistry, magnetic\udsusceptibility, and bulk chemistry, the Berduc meteorite is classified as an L6 ordinary\udchondrite.