This is an interesting development posted at www.spaceweather.com
Look up the archived page for Oct. 27, 2009. Archive search is near top right of page.
I’m not sure I agree with the experts referred to in the post, though. Where are my X-ray glasses?
MYSTERY OBJECT: Yesterday, astronomers in Arizona, New Mexico and Spain, all hunting for near-Earth asteroids, discovered a “mystery object” orbiting Earth. Temporarily named “9UO1FF6,” it is small and in an elongated, 31-day orbit. Experts say it is probably a piece of an Apollo-era Moon mission. We’ll get a closer look on Oct. 29th when it zips past Earth about 82,000 km (0.2 lunar distances) away.