A 150-foot wide asteroid is expected to pass closely by Earth on Friday, and though it will be difficult to see in skies over the U.S., the fly-by will be broadcast online.
Backyard astronomers on the other side of the world will be able to see the asteroid, known as 2012 DA14, as the object makes its closest pass by Earth. But by the time it comes into view over Baltimore's skies, it will have moved far enough away that it will be tougher to see.
"It will brighten only to magnitude 7.5, too faint to be seen with the naked eye, but easily visible with a good set of binoculars or a small telescope. The best viewing location for the closest approach will be Indonesia, from which the asteroid will be seen to move at a rate of almost 1 degree per minute against the star background. Eastern Europe, Asia and Australia are also well situated to see the asteroid around its closest approach. But by the time Earth rotates enough for observers in the continental United States to have a chance to see the asteroid, it will have receded and faded to about the 11th magnitude."