Asteroid 2011 OB
2011 OB is a near-Earth asteroid roughly 546 m across, about the size of a small town. Its closest recorded pass was on 8 Jul 1944 at 3.4 lunar distances.
Estimated size
546 m
about the size of a small town
Closest pass on record
3.44 LD
8 Jul 1944
Speed relative to Earth
20.2 km/s
Brightness (H)
19.31
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.