Asteroid 2011 UH20
2011 UH20 is a near-Earth asteroid roughly 239 m across, about the size of a stadium. Its closest recorded pass was on 11 Apr 1977 at 4.6 lunar distances.
Estimated size
239 m
about the size of a stadium
Closest pass on record
4.57 LD
11 Apr 1977
Speed relative to Earth
21.1 km/s
Brightness (H)
21.1
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.