On April 23, 2009 FJ30 is expected to approach Earth at 0.0249 AU (2.3 million miles), close than previously estimated. It measures between 269 and 590 feet in diameter, and is traveling at about 31809 miles per hour. Will be about mag 22.   http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009%20FJ30;orb=1     Jim