On May 8, after almost 8 years, astronomers located a planet, which they ultimately found out was the returning 2010 WC9. An asteroid the size of the Statue of Liberty will pass by the Earth, narrowly missing us. Size wise it is quite a large one, about 60 to 130 meters.
Now, even though this asteroid will be passing by inside the orbit of the Moon, this is still a safe pass, and asteroid 2010 WC9's orbit has been updated now to the point where it was retired from the Sentry Risk table on May 10, 2018 - just two days after it was re-found.
In February of 2018 in Russian Federation offered for Dollars 210 billion to create a fusion megarocket to repel the attack from outer space (asteroid defense weapon). Although there is no risk of impact, this is one of the closest approaches of a space rock of that size.
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Orbit diagram for the near-Earth asteroid 2010 WC9, which will fly by Earth on May 15, 2018. It was assigned the designation 2010 WC9, based on the date of its discovery, and it was entered into the various databases kept by NASA, the Minor Planet Center, and others.
"2010 WC9 will be brighter than 11th magnitude at closest approach, making it visible in a small telescope". They lost it in 20 days and were neither able to determine the asteroid's complete orbit nor predict when it might make a comeback. At that time, the asteroid will be 0.53 lunar-distances from Earth (126,419 miles or 203,453 km from Earth).
"We are planning to broadcast this asteroid live to our Facebook page on the night of May 14, likely around midnight, if the weather forecast remains positive", Guy Wells, a specialist in observations of near-Earth objects at NBO, told EarthSky in an email. The asteroid will move pretty fast (30 seconds of arc per minute). It is nevertheless one of the closest flybys recorded for such a big object.