Asteroid to Give Earth Record-Setting Close Shave on Feb. 15….


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An asteroid half the size of a football field will give Earth the ultimate close shave this month, passing closer than many satellites when it whizzes by, but it won’t hit the planet, NASA scientists say.
The asteroid 2012 DA14 will fly by Earth on Feb. 15 and zip within 17,200 miles (27, 680 kilometers) of the planet during the cosmic close encounter. The asteroid will approach much closer to Earth than the moon, and well inside the paths of navigation and communications satellites.
“This is a record-setting close approach,” Don Yeomans, the head of NASA’s asteroid-tracking program, said in a statement. “Since regular sky surveys began in the 1990s, we’ve never seen an object this big get so close to Earth.”
Asteroid 2012 DA14 was discovered last year by an amateur team of stargazers at the La Sagra Sky Survey observatory in Spain. Yeomans stressed that, while the asteroid’s approach bring it closer than the geosynchronous satellites orbiting 22,245 miles (35,800 km) above Earth, 2012 DA14 poses no threat of a deadly collision with the planet.
“2012 DA14 will definitely not hit Earth. The orbit of the asteroid is known well enough to rule out an impact,” Yeomans, who heads the Near-Earth Object Program at NASA’s Jet Propulsion Laboratory in Pasadena, Calif. He added that the odds it will slam into a satellite are “extremely remote.”
A fairly typical asteroid like 2012 DA14 — which measures 150 feet (45 meters) across — zips by Earth about every 40 years, but only strikes every 1,200 years, Yeomans estimated, and the impact of such an object would not be catastrophic over a wide area.
Asteroid 2012 DA14 is about the same size of the object that exploded in the atmosphere above Siberia in 1908, leveling hundreds of square miles in what scientists now call the “Tunguska Event,” NASA officials explained.

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