Asteroid 2021 UP
2021 UP is a near-Earth asteroid roughly 30 m across, about the size of a house. Its closest recorded pass was on 17 Oct 1924 at 3.5 lunar distances.
Estimated size
30 m
about the size of a house
Closest pass on record
3.46 LD
17 Oct 1924
Speed relative to Earth
9.7 km/s
Brightness (H)
25.61
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.