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Unknown astronomical object 2020 SO makes its closest approach to Earth at a perigee distance of approximately 0.13 lunar distances (50,000 km; 31,000 mi). Researchers, who discovered 2020 SO on September 17, 2020, are still unsure whether the object is a small near-Earth asteroid or an artificial object. The booster of Surveyor 2's Atlas-Centaur rocket, launched by NASA in 1966, is suspected by the Jet Propulsion Laboratory.
2020-12-1

A large near-Earth asteroid, 2000 EM26, passes by the Earth safely with no threat of collision at 8.8 times further from the Earth than the Moon.
2014-02-17

Near-Earth asteroid 1998 QE2 and its moon pass within 3.6 million miles (5.8 mil km) of the Earth.
2013-05-31

A newly observed near-Earth asteroid 2013 ET with an estimated diameter of about 100 meters comes within 960,000 km from the Earth's surface.
2013-03-9

A newly observed near-Earth asteroid 2013 EC passes Earth within the orbit of the Moon.
2013-03-4

Plans are announced to attempt to intercept 65803 Didymos, a non-threatening near-Earth asteroid, in 2022 using AIDA.
2013-02-22