RT Conference Proceedings
T1 The 2011 Giacobinid outburst  : meteoroid flux determination and orbital data by using video imagery from the Spanish fireball network
A1 Trigo Rodríguez, Josep María
A1 Madiedo Gil, José María
A1 Williams, I. P.
A1 Cortés, J.
A1 Dergham, J.
A1 Pujols, P.
A1 Ortiz Moreno, José Luis
A1 Castro Tirado, Alberto J.
A1 Alonso Azcárate, Jacinto
A1 Zamorano, J.
A1 Izquierdo Gómez, Jaime
A1 Ocaña Gónzalez, Francisco
A1 Sánchez de Miguel, A.
A1 Tapia, Mar
A1 Martín Torres, J.
A1 Lacruz, J.
A1 Rodríguez, Diego
A1 Pruneda, Francesc
A1 Oliva, Armand
A1 Pastor Erades, Juan
AB On October 8th, 2011 the Earth encounteredthe dust trails left by comet 21P/Giacobini-Zinner during its XIX and XX century perihelion approaches.The encounter was forecasted in great detail[1, 2, 3]. Geometic circumstances were very favourableto produce a meteor storm, but unfortunately thetrails were older than in previous 1933 and 1946 historicalencounters. As a consequence of the decreasedflux number density in the comet trails, during the2011 Draconid night the Zenital Hourly Rate (ZHR)only just reached the outburst level with about 400meteors/hour, and the display was strongly attenuatedfor visual observers due to the Moon observing circumstances[4]. Despite this, the possibility of recordingusual meteor activity coming from a lowgeocentricvelocity meteoroid stream motivated us todevelop a special observing campaign. The encounterof our planet with dense meteoroid streams in suchfavourable geometric circumstances could be representativeof the organic and water delivery processes thatprobably participated in the terrestrial enrichment dueto the massive disruption of comets that occurred at thetime of the Late Heavy Bombardment [4]. Consequently,we put all our effort in studying this presentdayrare encounter using the multistation CCD andvideo monitoring available in the Spanish MeteorNetwork (SPMN) infrastructure together with additionalamateur monitoring stations. SPMN high sensitivityCCD and video cameras were able to recordhundreds of meteors that are allowing us to get valuableflux and orbital information on the meteoroidsthat produced the outburst. Some of the campaignhighlights are really astonishing as, for example, thedetection of a -11 absolute magnitude Draconid bolideover Andalusia, Spain produced by a 14 kg Giacobinidmeteoroid [5]. In this abstract we present some preliminaryresults on the magnitude of the meteoroidflux arrived to Earth and the first orbits computed sofar by our team.
YR 2012
FD 2012
LK http://hdl.handle.net/10272/9397
UL http://hdl.handle.net/10272/9397
LA eng
NO Trigo Rodríguez, J.M., Madiedo Gil, J.M., Williams, I.P., Cortés, J., Dergham, J., Pujols, P., Ortiz Moreno, J.L., Castro Tirado, A.J., Alonso Azcárate, J., Zamorano, J., Izquierdo Gómez, J., Ocaña Gónzalez, F., Sánchez de Miguel, A., Tapia, M., Martín Torres, J., Lacruz, J., Rodríguez, D., Pruneda, F., Oliva, A., Pastor Erades, J.: "The 2011 Giacobinid outburst  : meteoroid flux determination and orbital data by using video imagery from 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 2 jun 2026