The Torino Impact Hazard Scale was created in 1995 to categorize near-Earth object impact hazards. Until last week, no object had been scored higher than a 1 (out of 10). The asteroid 2004 MN4 has been given a 4. NASA is reporting that there is a 1 in 37 (2.7 percent) chance that the 390-meter rock will hit the Earth on Friday 13 April 2029. More at Wikipedia.