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.
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.
Source: Wikipedia "99942 Apophis" · CC BY-SA 4.0
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