Comet Elenin Due for a Close Call With Earth

Comet Elenin is due to make it's closest approach later this year when it will pass within 22 million miles of Earth. Elenin will make it's closest approach to the Sun on 10 September 2011. On the 16 of October 2011, the comet will pass within 21,000,000 miles of the Earth.
From the Wiki:

• The discoverer, Leonid Elenin, estimates that the comet nucleus is apx. 2.5 miles in diameter. As of April 2011, the comet is around magnitude 15 (roughly the brightness of Pluto), and the coma of the comet is estimated to be about 50,000 miles in diameter.

The graphic shows the path of the comet through the inner solar system.

Science daily article