2011 CQ1

 is a meteoroid discovered on 4 February 2011 by Richard A. Kowalski, at the Catalina Sky Survey. On the same day the meteoroid passed within 0.85 Earth radii (5480 km) of Earth's surface, and was perturbed from the Apollo class to the Aten class of near-Earth objects. With a relative velocity of only 9.7 km/s, had the asteroid passed less than 0.5 Earth radii from Earth's surface, it would have fallen as a brilliant fireball. The meteoroid is between 80 cm and 2.6 m wide. The meteoroid was removed from the Sentry Risk Table on 5 February 2011.

It was not until 2020 QG on 16 August 2020 that a non-impacting closer approach to Earth was observed.