Asteroid 528807 2009 BL71
528807 2009 BL71 is a near-Earth asteroid roughly 153 m across, about the size of a stadium. Its closest recorded pass was on 31 Mar 1972 at 11.4 lunar distances.
Estimated size
153 m
about the size of a stadium
Closest pass on record
11.39 LD
31 Mar 1972
Speed relative to Earth
9.4 km/s
Brightness (H)
22.07
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.