Apophis

99942 Apophis (provisional designation 2004 MN4) is a near-Earth asteroid and a potentially hazardous object, 450 metres (1,480 ft) by 170 metres (560 ft) in size. During a brief period of concern in December 2004, initial observations indicated a probability of 2.7% that the asteroid would hit Earth on Friday, April 13, 2029. Later observations eliminated that possibility of an impact with Earth, and it will pass Earth in 2029 at a distance of about 31,600 km (19,600 mi) above the surface. It will also have a close encounter with the Moon, passing about 89,600 km (55,700 mi) from the lunar surface.