Quaoar

Quaoar is a large trans-Neptunian object (TNO) located in the Kuiper Belt. It's about half the size of Pluto and was discovered in 2002.  

One of the most exciting discoveries about Quaoar is the presence of a ring system. This was a surprising find because the ring is located farther from Quaoar than the Roche limit, the distance at which a celestial body's tidal forces would normally prevent the formation of a ring. This discovery challenges our understanding of how rings form and persist.  

Quaoar also has a moon named Weywot. Together, Quaoar and Weywot form a binary system, orbiting each other.  

Studying Quaoar and other TNOs helps us understand the formation and evolution of our solar system.