Asteroid 2017 KB3
2017 KB3 is a near-Earth asteroid roughly 38 m across, about the size of a house. Its closest recorded pass was on 21 Nov 1939 at 2.6 lunar distances.
Estimated size
38 m
about the size of a house
Closest pass on record
2.57 LD
21 Nov 1939
Speed relative to Earth
11.4 km/s
Brightness (H)
25.1
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.