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Asteroid to pass Earth close to the Moon on Halloween weekend

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2015 TB145
From deep space   2015 TB145 to come very close

An asteroid estimated to be 470 metres wide will pass close to Earth on Halloween weekend. 2015 TB145 was discovered on October 10, 2015, by a Hawaiian telescope that is part of NASA's Near-Earth Object Observation (NEOO) Program.

NEOO is a project to identify and track all near-Earth objects (NEOs) closer than 30 million miles, or about 48 million kilometres.

"If the size is correct, the new found asteroid is 28 times bigger than the Chelyabinsk meteor that penetrated the atmosphere over Russia in February 2013," astronomy website Earth and Sky said.

The asteroid will pass closer to the Moon than to Earth over October 31 and November 1.

"The trajectory of 2015 TB145 is well understood," NASA's Paul Chodas said in a statement.

"At the point of closest approach, it will be no closer than about 480,000 kilometres, or 1.3 lunar distances," or 1.3 times the average distance between the Earth and Moon.

Mr Chodas, manager of the NEO program at NASA's Jet Propulsion Laboratory in California, said although this was close by astronomical standards, a small telescope would be needed to view the visitor.

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