is an Apollo near-Earth asteroid roughly in diameter. It was discovered on 13 November 2017 when the asteroid was about from Earth and had a solar elongation of 110 degrees. Ten days earlier, on 3 November 2017, the asteroid had passed from Earth, but only had a solar elongation of 65 degrees.
2001 Earth approach Calculating the orbit backwards it is known that the asteroid made a close approach to Earth on 8 November 2001. The nominal (best-fit) solution shows that the asteroid passed about from Earth. But due to the uncertainties in the trajectory, the asteroid could have passed as far as from Earth. The observation arc is only 118 days, but as the observation arc becomes longer the precise distance of the 2001 approach will become better constrained.
+ Generic size comparison of other large asteroids that passed less than 0.5 LD from EarthAsteroidAbsolutemagnitude(H) Generic diameterestimate assumingalbedo = 0.15 20.7 250 meters 2002 MN 23.6 66 meters 23.8 60 meters
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