RT Conference Proceedings
T1 Historical records of δ-Arietids superfireballs over Spain
A1 Madiedo Gil, José María
A1 Trigo Rodríguez, Josep María
AB Historical reports of bright fireballsare useful to better understand which meteoroidstreams can be temptatively associated with meteoritedroppingevents [1]. We present here a preliminaryanalysis of a very remarkable event that took placeover Spain on Dec. 8, 1932 and the evidences that supportits likely connection to the δ-Arietids meteorshower. Besides, there is evidence that indicate thatanother very bright, although less important, event waswitnessed over the same region during the same daycould be also associated to this shower. The δ-Arietidsis a minor shower which is included in the IAU workinglist of meteor showers with the code 289 DNA [2].Very few data exist for this radiant and, so, any newcontributions about it are of great interest.The densities calculated for δ-Arietids meteoroidsare comprised between 2000 and 5000 kg/m3, whichsuggest that that their parent body must be an asteroid[3]. Thus, one NEO, asteroid 1990 HA (217628 Lugh),has been proposed as the parent body for this shower[4]. This is an Apollo family asteroid with a diameterof about 1.4 km which is catalogued as a PHA. Moreover,this shower has been proposed as a candidate forpotential meteorite dropping events, and one fireballrecorded on Dec. 13, 1975 is believed to have produceda meteorite with a surviving terminal mass ofabout 290 g. [3, 4]. 1990 HA is not, however, the onlyNEO which has been reported to be able to producemeteorites. Thus, recently, asteroid 2002NY40 wasproven to be the source of meteorite dropping bolides[5].
YR 2011
FD 2011
LK http://hdl.handle.net/10272/9214
UL http://hdl.handle.net/10272/9214
LA eng
NO Madiedo Gil, J.M., Trigo Rodríeguez, J.M.: "Historical records of δ-Arietids superfireballs over Spain". En: 42nd Lunar and Planetary Science Conference (The Woolands, Texas, march 7-11, 2011)
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026