Asteroid 2017 BP31
2017 BP31 is a near-Earth asteroid roughly 428 m across, about the size of a small town. Its closest recorded pass was on 26 Aug 1958 at 12.2 lunar distances.
Estimated size
428 m
about the size of a small town
Closest pass on record
12.24 LD
26 Aug 1958
Speed relative to Earth
19.7 km/s
Brightness (H)
19.84
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.