High Quality Content by WIKIPEDIA articles! The 2009 satellite collision was the first accidental hypervelocity collision between two intact artificial satellites in Earth orbit. The collision occurred at 16:56 UTC on February 10, 2009, at 789 kilometres (490 mi) above the Taymyr Peninsula in Siberia, when Iridium 33 and Kosmos-2251 collided. The satellites collided at a speed of 11.7 kilometres per second (7.3 mi/s), or approximately 42,120 kilometres per hour (26,170 mph).