It is a well-known astronomical convention that Earth has only one natural satellite, which is known (somewhat uncreatively) as “the moon.” However, astronomers have known for a little over a decade that Earth also has a population of what are known as “transient moons.” These are a subset of near-Earth objects (NEOs) that are temporarily scooped up by Earth’s gravity and assume orbits around our planet.
Click here for original story, The Large Synoptic Survey Telescope could find more of Earth’s transient moons
Source: Phys.org