Close Approach By Asteroid 2012 BX34
An anonymous reader writes with news that asteroid 2012 BX34, 11 meters wide, is in the process of passing within 60,000km of Earth — about a fifth of the distance between the Earth and the Moon. At that size, the asteroid would pose no danger even if it hit the Earth's atmosphere.
also of interest, a 10 meter metal (e.g. iron-nickel) asteroid will have big fragments that will hit the ground, for example the one that hit Sikhote-Alin mountains in Siberia in February 1947, 150 tons of fragments hit the ground and one of them weighed 1.7 tons!