2012 DA14’s close shave

One of the closest asteroid encounters since the beginning of intensive asteroid tracking, asteroid 2012 DA14 swings past Earth at a distance of only 17,200 miles – putting it closer to Earth than most weather and communcations satellites in geosynchronous orbit. Despite this, the asteroid is well outside the orbit of such low-Earth-orbit structures as the International Space Station. Discovered in February 2012, 2012 DA14 has a diameter of approximately 150 feet and is moving at a speed of over 17,000 miles per hour. 2012 DA14’s next closest approach will take place in 2046, but it will not make another passage this close until 2110. The asteroid is unrelated to a meteor airburst event earlier the same day over Russia.