International Astronomical Union Minor Planet Center

New Capabilities

As of May 2026: Official body for designating moons and minor planets

On March 11, 2025, the International Astronomical Union dropped a bombshell: 128 new moons orbiting Saturn. Not over a year. Not over a decade. All at once. A team led by Edward Ashton stacked thousands of telescope images from 2019 to 2023, revealing a swarm of tiny irregular satellites—each just a few kilometers across—that had been hiding in plain sight. Saturn now has 274 confirmed moons, more than all other planets in the solar system combined.

Updated May 19