Technically a “temporarily captured object,” 2024 PT5 is a near-Earth asteroid and Earth’s newest mini-moon. This 11-meter diameter near-Earth asteroid — about the same as a London bus — is expected to stay in orbit for a couple of months before resuming its own journey through the solar system on Nov. 25.

A small asteroid, 2024 PT5, will spend the next two months alongside our planet as a mini moon before swooping back to deep space

Earth is going to have its very own mini-moon from September 29 until November 25. The regular moon's new, temporary friend is 2024 PT₅, an asteroid captured from the Arjuna asteroid group (called the "Arjunas").