Asteroid 2015 OQ21

2015 OQ21 is a near-Earth asteroid roughly 10 m across, about the size of a bus. Its closest recorded pass was on 24 Jul 1923 at 2.5 lunar distances.

Estimated size

10 m

about the size of a bus

Closest pass on record

2.55 LD

24 Jul 1923

Speed relative to Earth

7.7 km/s

Brightness (H)

27.9

Lower means larger

Past close approaches

Recorded passes within about 20 lunar distances since 1900.