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Asteroid to buzz Earth

 
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Kalinoux
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MessagePosté le: 25/01/2008 23:18:11    Sujet du message: Asteroid to buzz Earth Répondre en citant

Very Happy Very Happy Hopefully, it seems that experts are sure it will not fell on our heads Laughing

Here Arrow Asteroid_earth

Citation:
A HUGE asteroid will zoom past Earth next week and will be so close that amateur astronomers should be able to spot it, experts say.

Measuring between 150m and 600m across, asteroid 2007 TU24 would inflict devastating regional damage were it to hit Earth, but there is no risk of any collision, they said.
It will pass on Tuesday and come to within 534,000km of the Earth at its closest point at 6.34pm Queensland time according to a Near Earth Object database compiled by the University of Pisa in Italy.

"For a brief time the asteroid will be observable in dark and clear skies with amateur telescopes of three inches (7.5cm) or larger," NASA said on its NEO site.

Asteroid 2007 TU24 will make the closest approach of any known potentially hazardous asteroid of this size or larger until 2027, NASA said, adding that objects of this size come close to Earth about every five years or so on average.

The rock was discovered only last October under a surveillance program run by the University of Arizona.

According to the Minor Planet Centre of the Paris-based International Astronomical Union (IAU), the closest detected approach by an asteroid was on March 31, 2004, by 2004 FU162, which came within 6500km of Earth.

The day after 2007 TU24's terrestrial flyby, asteroid 2007 WD5 is expected to come within 26,000km of Mars, a distance that is less than a whisker in space terms.

Asteroid 2007 WD5 ignited a brief surge of excitement among astronomers after it was discovered in November.

Initial computations of its orbit gave a roughly 1-in-25 chance that it might whack into Mars on January 30, providing a celestial show that could be monitored by US and European scoutcraft there.

Measuring about 50m across, it would have delivered an impact equivalent to a three-megaton nuclear weapon.

A rock of this size exploded in the atmosphere over Tunguska, Siberia, in 1908, felling around 80 million trees over 2200 sq km.

But further calculation showed that the big splat would be a big miss.

"It's highly unlikely that it's going to hit," said NEO expert Benny Peiser of Liverpool John Moores University in northwestern England, as the odds of a collision by 2007 WD5 fell to around 0.01 per cent, or one in 10,000.


Enjoy your week end,

Kalinoux Respect

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