The last 28th of November, an asteroid coming from the Kuiper belt entered the atmosphere just above the coastline of Maresme. The fire-ball was much luminous than the full moon of that day, so the phenomenon was observed and registered at many places causing a lot of interest among amateur astronomists. At the Astronomic Observatory of Montsec, the event was carefully followed and many accurate measurements were done. From the velocity of the rock (54.000km/h) it was possible to derive its procedence and from the fragmentation process its composition was determined. The reconstruction of the orbit was made at the observatory, indicating that the rock started desintegrating at a very high altitude, hence not producing any meteorites. For further information, images and details about the "Mataró fire-ball" please look at the link below.