Asteroid 2021 GM4
2021 GM4 is a near-Earth asteroid roughly 173 m across, about the size of a stadium. Its closest recorded pass was on 10 Jul 1972 at 5.1 lunar distances.
Estimated size
173 m
about the size of a stadium
Closest pass on record
5.10 LD
10 Jul 1972
Speed relative to Earth
7.7 km/s
Brightness (H)
21.81
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.