  We present the analysis of the atmospheric trajectory and orbital data of
four bright bolides observed over Spain, one of which is a potential meteorite
dropping event. Their absolute magnitude ranges from -10 to -11. Two of these
are of sporadic origin, although a Geminid and a kappa-Cygnid fireball are also
considered. These events were recorded in the framework of the continuous
fireball monitoring and spectroscopy campaigns developed by the SPanish Meteor
Network (SPMN) between 2010 and 2012. The tensile strength of the parent
meteoroids is estimated and the abundances of the main rock-forming elements in
these particles are calculated from the emission spectrum obtained for three of
these events. This analysis revealed a chondritic nature for these meteoroids.
