looming giant asteroid to Earth in 2015 turned out to be a dead comet TB145. This conclusion was made by astronomers studying data obtained by NASA’s Infrared Telescope Facility on the island of Hawaii as part of Mauna Kea. This was reported on the agency’s website.
Scientists were able to determine that, most likely, the asteroid is a dead comet nucleus. According to them, it is a heavenly body, make a lot of turns around the sun, it lost part of his mother, and his tail ceased to exist. To such conclusions scientists came after studying the reflectivity of the celestial body.
Total surface of the asteroid reflects, according to scientists, about six percent of the sunlight (about the same amount reflects the asphalt). This is more than a typical comet nucleus reflects, but since there is a tail of an asteroid, scientists have concluded that it is a dead comet.
At about 20:00 Moscow time on October 31, 2015 celestial body It appeared at a distance of 486,000 kilometers from the Earth’s surface (1.3 times more distance to the moon). The diameter of the celestial body reaches 600 meters (ten times larger than the Tunguska body), and a complete revolution around its axis it makes five hours.
09:11 May 8, 2015
The asteroid 2015 TB145 was opened on October 10 systems Pan-STARRS and is classified as a potentially dangerous object (because of its size and proximity to the Earth). These objects include the body, the size of which more than a hundred meters and are approaching the planet at a distance of 7.5 million kilometers.
The next time an asteroid close to Earth will be in September 2018 at a distance of 38 million kilometers from She (it is about a quarter of the distance between the planet and the Sun). In the next hundred years for the Earth, it is not dangerous.
The US currently have the most reliable and productive system to track near-Earth objects. According to the data provided by NASA, the forces of the country able to detect more than 98 percent of such facilities.
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