Asteroid 163051 2001 YJ4
163051 2001 YJ4 is a near-Earth asteroid roughly 2.2 km across, mountain-sized. Its closest recorded pass was on 26 May 1954 at 15.3 lunar distances.
Estimated size
2.2 km
mountain-sized
Closest pass on record
15.27 LD
26 May 1954
Speed relative to Earth
11.4 km/s
Brightness (H)
16.33
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.