Date: 1/13/2010

Italian scientists Ernesto Guido and Giovanni Sostero first documented AL30 as a spent rocket booster stuck in orbit. That theory was proved wrong after it was later confirmed to be a near-Earth asteroid calculated at 10-15 meters wide. The object passed within 130,000 km of our planet. Had it collided with Earth, the impact would have resulted in an air burst comparable to 100kt of TNT.