An asteroid the shape of a fiendish looking skull COULD collide with Earth next year, 36 months after NASA discovered the creepy space rock
According to NASA researchers, asteroid 2015 TB145, or the ‘Halloween asteroid,’ already once skimmed past Earth last October 31, 2015. Radar images captured by the space agency as it came 480,000 kilometers of Earth reveals some of the large cavities and ridges that give the boulder its ghoulish skull-like shape.
— NASA JPL (@NASAJPL) November 3, 2015
Rt.com reports: First observed on October 10, 2015 by researchers at the University of Hawaii, the asteroid is set to swing by Earth for a second run in the new year. According to Pablo Santo-Sanz from the Institute of Astrophysics of Andalusia, the asteroid’s previous encounter with Earth yielded some spectacular information about its characteristics and behavior.
“From observations from Spain, we discovered that this object’s most likely rotation period is 2.94 hours, in other words, this is the approximate length of its day, although we cannot rule out another possibility: 4.78 hours, another solution which is consistent with our optical data,” he said.
“The object measures between 625m and 700m, its shape is a slightly flattened ellipsoid, and its rotation axis was roughly perpendicular to the Earth at the time of its closest proximity.”
Santo-Sanz added that through light analysis of the object, the rock is “only slightly more reflective than charcoal,” while the rate at which it absorbs heat is consistent with that of other asteroids.
The Halloween asteroid is expected to fly by Earth next November. However, it will not come anywhere near as close as before for many years to come.
According to Thomas G Muller, a researcher from the Max-Planck-Institute who was involved in studying the asteroid, the subsequent “exciting” visit from the Halloween asteroid will come 71 years from now.
“The next slightly more exciting encounter will be around Halloween’s day in the year 2088, when the object approaches Earth to a distance of about 20 lunar distances. The encounter on Halloween in 2015 was the closest approach of an object that size since 2006, the next known similar event is the passage of asteroid 1999 AN10 on August 7, 2027,” he said.
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