Saturn’s moon Polydeuces is tiny — it has a mean radius of just 0.8 miles (1.3 kilometers). Notably, it is also a “Trojan" moon, meaning that it follows a larger moon (in this case, Dione) in orbit around Saturn. The degree of Polydeuces’ wandering near and far from Dione is theorized to be the largest detected so far for any Trojan moon (the small moon is thought to move as close as 39 degrees and as far as 92 degrees).