The asteroid is expected to make a “horseshoe path” around Earth over the next two months. For the next two months, an unusual object about the size of a bus will be orbiting above our heads. Say hello to Earth’s temporary new moon.

Here’s what to know about our new, temporary celestial neighbor. Earth has a large gravitational pull. So it’s not uncommon for objects flying through space to be attracted to it or get caught up in an orbit — at which point they earn status as miniature moons. The same happens with objects purposefully placed in space, such as satellites.