The asteroid designated 2012 TC4 is estimated to be 15 to 30 meters in size. He also said, "the close flyby in 2050 might deflect the asteroid such that it could hit the Earth in the year 2079". "There is no hazard in its upcoming pass or anytime in the near future", Alan Harris, a former Jet Propulsion Laboratory (JPL) researcher told Astrowatch.net. This asteroid was discovered by the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS) in Hawaii in 2012.
Nonetheless, its close approach to Earth is an opportunity to test the ability of a growing global observing network to communicate and coordinate its optical and radar observations in a real scenario. "After that, it becomes possible it could get very close and given the uncertainty of its trajectory you could have a potential impact further down the scale, it's just one of many reasons why the work being done by tracking stations and observatories is so crucial, he explained", Glenn concluded. But 2012 TC4 asteroid is different.
Calculations revealed by JPL in July 2017 indicated that 2012 TC4 could pass as close as 4,200 miles (6,800 kilometers).
A small asteroid is scheduled to safely pass by Earth tomorrow at a distance of about 42,000 kilometres, allowing trackers around the world to test their ability to operate as an worldwide asteroid warning network. When it passes Earth sometime on Thursday it is predicted to be around 27,000 miles from our atmosphere.
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The meteor that exploded over the Russian city of Chelyabinsk in February 2013, injuring 1,500 people and damaging over 7,000 buildings, was about 66 feet (20 meters) wide.
Rüdiger Jehn of European Space Agency said that asteroid 2012 TC4 completes a one day loop around the Sun in 609 days, so it is expected to return to Earth in 2050 and then again in 2079.
NASA's Mike Kelley, who leads the Thursday's exercise to spot, track and intimately probe the transient visitor, said that there is no chance of collision, not even with the satellites.