Asteroid 2021 PH4
2021 PH4 is a near-Earth asteroid roughly 229 m across, about the size of a stadium. Its closest recorded pass was on 30 Nov 1950 at 15.8 lunar distances.
Estimated size
229 m
about the size of a stadium
Closest pass on record
15.85 LD
30 Nov 1950
Speed relative to Earth
13.6 km/s
Brightness (H)
21.2
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.