Asteroid 2021 PO
2021 PO is a near-Earth asteroid roughly 531 m across, about the size of a small town. Its closest recorded pass was on 23 Aug 1921 at 18.4 lunar distances.
Estimated size
531 m
about the size of a small town
Closest pass on record
18.37 LD
23 Aug 1921
Speed relative to Earth
28.9 km/s
Brightness (H)
19.37
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.