RT Conference Proceedings
T1 Large meteoroids from the 2P/Encke complex : orbital data of 2010 taurids recorded in the framework of the Spanish fireball network
A1 Dergham, J.
A1 Trigo Rodríguez, Josep María
A1 Cortés, J.
A1 Alonso Azcárate, Jacinto
A1 Pujols, P.
A1 Ortiz Moreno, José Luis
A1 Castro Tirado, Alberto J.
A1 Madiedo Gil, José María
A1 Montanyà, J.
A1 Velde, O. van der
AB Cometary disruptions are though to bean important source of Near Earth Objects (heareafterNEOs). A continuous monitoring of meteor showersfrom multistation networks on the ground allows to getvaluable orbital information of large meteoroids producingfireballs. From such orbits can be establishedconections with the orbital elements of diferent asteroidsor comets. In 2010 we started a program to getprecise orbital information of very bright Taurid bolidesin order to try to identify possible associationswith members of the NEO population [1]. We havealready identified some meteoroids that could be dynamicallyassociated with some NEOs currently identifiedas members of the Taurid complex. This group ofbodies is formed by about 20 NEOs that presumablyformed by the fragmentation of a giant comet over thepast 20-30 kyr [2-4]. Some of these bodies have orbitalaffinities to comet 2P/Encke, but recent studies havefound other asteroids in Apollo-like orbits that can begood candidates to trace a progressive cometary disruptionthat at different stages as a by-product producedthe Taurid meteoroid branches [3, 4]. It is importantto remark that the NEOs associated with theTaurid meteoroid streams are presumably dark, asseems to confirm the spectral information obtained forthe largests members (e.g. 16960 belongs to the Bspectral class [5]). Consequently these bodies areamong the most difficult and hazardous NEOs thatremain to be discovered. In fact, the Tunguska objecthas been temptatively associated with the Taurid complex[6]. A recent paper also links the Earth’s intersectionwith the debris produced by the disruption of thecometary progenitor with a possible Palaeolithic extinctionoccurred around 12,900 BP [7]. Our orbitalstudies of Taurid meteoroids could also identify othermembers of the complex by using association criteriaand backwards integration of their orbits. In fact wehave found some Taurid complex members that areexhibiting orbits not directly linked with the two mainbranches. Obviously, having the Taurid complex somemembers with about 100 meters in diameter [4], wesuspect of the existence of much more bodies in such arange of sizes not discovered yet. These objects couldalso produce meteorite-droping bolides in determinatefavourable geometric circumstances [1].
YR 2012
FD 2012
LK http://hdl.handle.net/10272/9290
UL http://hdl.handle.net/10272/9290
LA eng
NO Dergham, J. ; Trigo Rodríguez, Josep María ; Cortés, J. ; Alonso Azcárate, J., Pujols, P., Ortiz Moreno, J.L., Castro Tirado, A.J., Madiedo Gil, J.M.,  Montanyà, J., Velde, O. van der: "Large meteoroids from the 2P/Encke complex : orbital data of 2010 taurids recorded in the framework of the Spanish fireball network".  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