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Tuesday, September 7, 2010

Asteroids Zip Between Earth-Moon Today

Two asteroids, several feet in diameter, are closing in on Earth Wednesday from two differing trajectories (not binary) bringing them within the Earth-Moon system without possibility of impact. The Catalina Sky Survey near Tucson, Ariz., discovered both objects on the morning of Sunday, Sept. 5, during a routine monitoring of the skies. Twitter for the latest info.

Near-Earth asteroid 2010 RX30 is estimated to be 32 to 65 feet (10 to 20 meters) in size and will pass within 0.6 lunar distances of Earth (about 154,000 miles, or 248,000 kilometers) at 2:51 a.m. PDT (5:51 a.m. EDT) Wednesday. [TV report]

The second object, 2010 RF12, estimated to be 20 to 46 feet (6 to 14 meters) in size, will pass within 0.2 lunar distances (about 49,088 miles or 79,000 kilometers) a few hours later at 2:12 p.m. PDT (5:12 pm EDT). MORE from NASA, Russia Today, and the late Carl Sagan.

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