Asteroid 523656 2011 WO4
523656 2011 WO4 is a near-Earth asteroid roughly 551 m across, about the size of a small town. Its closest recorded pass was on 7 Nov 1979 at 15.5 lunar distances.
Estimated size
551 m
about the size of a small town
Closest pass on record
15.47 LD
7 Nov 1979
Speed relative to Earth
34.0 km/s
Brightness (H)
19.29
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.