RT Conference Proceedings
T1 Meteorite-dropping bodies from cometary meteoroid streams and their physical properties
A1 Konovalova, N.
A1 Madiedo Gil, José María
A1 Trigo Rodríguez, Josep María
AB Until recently it was considered thatthe sources of meteorite-dropping bodies are asteroidalfragments mostly delivered by main belt resonancescrossing the Earth’s orbit. Such source may include aconsiderable fraction of meteorites falling at a giventime [1]. Wetherill initially discarded comets as aprobable source of meteorites [2], but recent resultsseem to indicate that they could also contribute [3, 4].The terrestrial collections of meteorites include theordinary chondrites meteorites represented by ~85% ofmeteorite falls and finds, but only ~40% of the totalmeteorite mass. Iron meteorites account for 50% of themass but only ~4% of meteorites. Carbonaceous chondritemeteorites forming ~9% of the mass are underrepresenteddue to their fragility and low density [5]. Ithas been estimated that ~24,000 meteorites withmasses from 100 g to 10 kg fall to the Earth each yearand amongst them a few ones might have a cometaryprovenance. Some Near Earth Objects (NEOs) supportsthe notion that dormant nuclei of periodic cometscan have asteroidal appearance, and that some fractionof the NEOs have a cometary origin and are potentiallydelivering meteorites to the Earth.
YR 2012
FD 2012
LK http://hdl.handle.net/10272/9292
UL http://hdl.handle.net/10272/9292
LA eng
NO Konovalova, N., Madiedo Gil, J.M., Trigo Rodríguez, J.M.: "Meteorite-dropping bodies from cometary meteoroid streams and their physical properties". En: 43rd Lunar and Planetary Science Conference (The Woolands, Texas, march 19-23, 2012)
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026