Near earth asteriod

NASA reports:

Asteroid 2007 TU24, discovered by the Catalina Sky Survey on October 11, 2007 will closely approach the Earth to within 1.4 lunar distances (334,000 miles) on 2008 Jan. 29 08:33 UT. This object, between 150 and 600 meters in diameter, will reach an approximate apparent magnitude 10.3 on Jan. 29-30 before quickly becoming fainter as it moves further from Earth. For a brief time the asteroid
will be observable in dark and clear skies with amateur telescopes of 3 inch apertures or larger.

More detail at JPL / NASA

Illustration is courtesy of amateur astronomer Dr. Dale Ireland from Silverdale, Washington.