2020 CD3 is a tiny near-Earth asteroid and temporary satellite of Earth. It was discovered at the Mount Lemmon Observatory by astronomers Theodore Pruyne and Kacper Wierzchos on 15 February 2020, as part of the Mount Lemmon Survey or Catalina Sky Survey. The asteroid's discovery was announced by the Minor Planet Center on 25 February 2020, after subsequent observations have ruled out the possibility of the object being artificial. Based on its preliminary orbit, 2020 CD3 may have been captured by Earth around 2016–2017 and it will leave the earth in 2020.
https://en.wikipedia.org/wiki/2020_CD3
