2019 OU1

is a sub-kilometre asteroid, classified as a near-Earth object of the Apollo group. On 28 August 2019, the object safely passed 1.028 million kilometres from Earth, travelling at around.

Observation

was first observed on 25 July 2019 by Pan-STARRS 1 at Haleakala Observatory, Hawaii, United States.

Orbit and classification

is classified as an Apollo asteroid, which means that it is an Earth-crossing asteroid that has an orbital semi-major axis greater than but a perihelion distance less than Earth's aphelion distance of.

Close approach in 2019

On 28 August 2019, safely passed from Earth, travelling at around.

Physical characteristics

Based on its absolute magnitude of 22.874, is estimated to have a diameter of 71–160 metres using an assumed albedo of 0.05 and 0.25 respectively.