Large asteroid has a (tiny) chance of hitting Earth

Space rocks abound.


Astronomers discovered a new near-Earth object (NEO) last month that made them do a double take. 

The previously unseen asteroid named 2019 CE4 is about a kilometer, or 0.6 mile, in diameter.

That’s roughly 50 times the diameter of the bolide that blew out thousands of windows when it exploded in the atmosphere over a Russian city in 2013

After 2019 CE4 was first observed, it briefly shot to the top of the European Space Agency’s NEO “risk list.”

“The high ranking was mostly due to its large size, because the impact probability always remained less than one in two million,” reads the March newsletter from ESA’s NEO Coordination Center

Initial analysis of the asteroid’s orbit appeared to show a slim chance of impact in 2025, but subsequent observations ruled out an impact between now and 2065. The chance of a collision at that point remains less than 1 in a million, according to ESA.

As a result, 2019 CE4 has slipped far down the risk list.

However, the 7th highest-risk NEO on the list could potentially hit us this September. It’s a 40-meter (131 feet) asteroid named 2006QV89. Fortunately, even space rocks near the top of the list don’t really have much of a chance of actual impact. In the case of 2006QV89 on Sept. 9, the odds of impact are less than 1 in 11,000.

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