Jeffg010
Diamond Member
Asteroid 2005 YU55 will be as close as the moon and as far as I can tell should be able to see it with a telescope. It is blacker then coal so it is not easy to see.
http://www.space.com/11310-huge-asteroid-2005-yu55-passing-earth-november.html
http://www.space.com/11310-huge-asteroid-2005-yu55-passing-earth-november.html