2008 TC3
2008 TC3 (Catalina Sky Survey temporary designation 8TA9D69) was an 80 tonnes 4.1 meters (13 ft) diameter asteroid that entered Earth's atmosphere on October 7, 2008 and exploded at an estimated 37 kilometers (23 mi) above the Nubian Desert in Sudan. Some 600 meteorites, weighing a total of 10.5 kilograms (23 lb), were recovered; many of these belonged to a rare type known as ureilites, which contain, among other minerals, nanodiamonds.
It was the first time that an asteroid impact had been predicted prior to its entry into the atmosphere as a meteor.