At the present, since no debris field has been detected and the total energy seems to be low, we can conclude that the flash was most likely a meteor due to a small (diameter <10m assuming a density of 2 g/cc) meteoroid. Even if the event may be 500 times less energetic than recent estimates of the Tunguska event, it is remarkable that an amateur astronomer equipped with a 12" telescope and a webcam could record it at 730 million of km.Read more
The moment Jupiter was HIT by a giant asteroid yesterday
Jupiter was hit during the day yesterday - but it apparently went unobserved from Earth ...except for one astronomer, Dan Petersen, who saw the flash with his own eyes When Petersen reported the sighting on a web forum, amateur astronomer George Hall checked his overnight footage Read more
Astronomers are abuzz over sightings of a flash on Jupiter - which suggests that the giant planet has taken another bullet for the solar system team. Today's report follows similar sightings of impacts in 2009 and 2010. As in those earlier cases, the call has gone out to look for any visible scars on Jupiter's cloud tops. That would be a sure sign that an asteroid or comet was drawn in by the planet's gravitational pull, potentially saving us from a cosmic collision threat. Read more
Dan Petersen, an amateur observer, reports about a bright fireball in Jupiter. The event happened this morning on 10th September 2012 at 11:35:30 UT and lasted about two seconds. It happened in the Eastern limb at about Longitude (system I)=335 and latitude +12 degrees north inside the southern edge of the NEB. Source