Now this would be a real Friday the 13th to remember...note size: 1300 feet...odds 1-300.
http://www.cnn.com/2004/TECH/space/...d.ap/index.html
Scientists study orbit of newly found asteroid
LOS ANGELES, California (AP) -- There's a 1-in-300 chance that a recently discovered asteroid, believed to be about 1,300 feet long, could hit Earth in 2029, a NASA scientist said Thursday, but he added that the perceived risk probably will be eliminated once astronomers get more detail about its orbit.
There have been only a limited number of sightings of Asteroid 2004 MN4, which has been given an initial rating of 2 on the 10-point Torino Impact Hazard Scale used by astronomers to predict asteroid or comet impacts, said Donald Yeomans, manager of the Near Earth Object Program at NASA's Jet Propulsion Laboratory in Pasadena.
No previously observed asteroid has been graded higher than 1.