In his book "Dark matter, missing planets and new comets," the late Dr. Tom Van Flandern postulated, based on his Exploded Planet Hypothesis (EPH), that virtually all asteroids would be found to have orbiting satellites. This was based on his initial observation that chunks of debris from tests of Russian anti-satellite weapons had a tendency to orbit each other, smaller chunks assuming orbit around larger ones. This observation has now been confirmed numerous times, with the latest being asteroid 1994 cc. Radar observations at the Arecibo Observatory in Puerto Rico have confirmed that 1994 cc is indeed 3 objects, not one, as is assumed by the conventional models.
This is simply more evidence in support of Van Flandern's theory, which looks stronger by the day. Since very few Near Earth Objects or other asteroids have been observed, and a sizable percentage have now been found to have satellites, it follows that a very high percentage of asteroids have satellites or moons, and that strongly implies that his EPH is correct.
See the Space.com story here.