A tiny asteroid has gotten itself stuck in Earth’s orbit.

Last week, a team of astronomers employed by the Catalina Sky Survey in Arizona spotted a small object floating quickly through the night sky. At first, the astronomers weren’t quite sure what to make of this object. It was originally considered that the object may be an errant satellite, but no records of satellites with that orbit could be found. After several more observatories spotted it over the following days, a consensus was reached: the object is an asteroid, about the size of an average car, that has gotten itself stuck in the Earth’s gravitational orbit, not unlike our own Moon.

The asteroid has been given the designation 2020 CD3. This is actually the second time in recent history that a passing asteroid was captured by Earth’s orbit. The first time occurred in 2006, when an asteroid designated 2006 RH120 hovered around the Earth between September 2006 and June 2007 until eventually breaking free and flying off into space.

Based on estimations by astronomers, 2020 CD3 has already been orbiting Earth for about three years, moving around the planet in an oval shape once every 47 days. Like 2006 RH120, 2020 CD3’s time in our orbit will likely only be temporary. Grigori Fedorets, an astronomer of Queen’s University Belfast in the UK, says it will probably leave our orbit some time in April.

“It is heading away from the Earth-moon system as we speak,” he said. Some astronomers have disagreed with this estimation however, and are currently working on projections of their own.