It is expected to follow a horseshoe-type orbit to become a “mini-moon” of Earth on 29 September only to return to a path orbiting the Sun about 57 days later on 25 November, according to the study.

Say hello to Earth’s temporary new moon. From Sept. 29 to Nov. 25, a passing asteroid will be pulled in by Earth’s gravity — sort of like a window shopper — before returning to its normal orbit around the sun.