Radar images from those observations revealed asteroid 2015 TB145 true
size (it's a bit larger than previously thought) and its speed. The
asteroid is hurtling through space at a whopping 78,293 mph (126,000
km/h).
"This would generate a 6-mile-wide crater if it were to the Earth,
something of this size and speed," asteroid impact expert Mark Boslough,
a physicist at Sandia National Laboratories in New Mexico, said in the Slooh webcast. He was also impressed by the early radar images of the 2015 TB145.
And it was only found a few weeks before its close fly by.
Link.
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