Asteroid 2009 HL21
2009 HL21 is a near-Earth asteroid roughly 123 m across, about the size of a stadium. Its closest recorded pass was on 16 Jan 1962 at 3.3 lunar distances.
Estimated size
123 m
about the size of a stadium
Closest pass on record
3.25 LD
16 Jan 1962
Speed relative to Earth
8.8 km/s
Brightness (H)
22.55
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.