Asteroid 163899 2003 SD220
163899 2003 SD220 is a near-Earth asteroid roughly 791 m across, about the size of a small town. Its closest recorded pass was on 22 Dec 1966 at 8.0 lunar distances.
Estimated size
791 m
about the size of a small town
Closest pass on record
8.03 LD
22 Dec 1966
Speed relative to Earth
6.4 km/s
Brightness (H)
17.56
Lower means larger
Past close approaches
Recorded passes within about 20 lunar distances since 1900.