Another asteroid to give Earth a close shave June 27, 2011
June 24, 2011 By Nancy Atkinson, Universe Today
2011 MD's orbital parameters. Credit: JPL Small-Body Database Browser
(PhysOrg.com) -- A newly discovered house-sized asteroid will miss the Earth by less than 17,700 km (11,000 miles) on Monday June 27, 2011. That’s about 23 times closer than the Moon. The size and location of the asteroid, named 2011 MD, should allow observers in certain locations to take a look at the space rock, even with small telescopes. It’s closest approach will be at 13:26 UTC on June 27.
According to Skymania, 2011 MD was found just yesterday, June 22, by LINEAR, a pair of robotic telescopes in New Mexico that scan the skies for Near Earth Asteroids.
As of now, asteroid 2011 MD is estimated to be between 9 to 45 meters (10 to 50 yards) wide. Dr. Emily Baldwin, of Astronomy Now magazine, said there is no danger of the asteroid hitting Earth, and even if it did enter the atmosphere, an asteroid this size would “mostly burn up in a brilliant fireball, possibly scattering a few meteorites.”
To find out updated information on 2011 MD’s ephemeris, physical parameters and more, including an orbit diagram and close-approach data, see this page on JPL’s Solar System Dynamics website.
Source: Universe Today
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That may be true for house-sized meteorites that hit the ground going that fast. A house-sized meteor, however, would expend its energy high up in the atmosphere where it would most likely break up catastrophically in a large fireball that would be amazing to see, but would be mostly harmless. Surviving fragments from the fireball might hit the ground, but they'd be slowed by atmospheric friction to the point where they would do little if any damage when they land.
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They should call this asteroid Gillette.
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facts
30 meter crater, 2 meter bolide.
http://forgetomor...in-peru/
see page 25
4 meter wide bolides strike the Earth ~every 15 years.
6 meter wide bolides strike ~every 35 years.
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Page 25 of http://www.lpi.us...-954.pdf
Jun 27, 2011
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Nuke 01 : Rock 00.