Various groupings of Jovian moons with the newly discovered ones shown in bold. The 'oddball,' called Valetudo after the Roman god Jupiter's great-granddaughter, has a prograde orbit that crosses the retrograde orbits. | Roberto Molar-Candanosa, courtesy of Carnegie Institution for Science.

Twelve New Moons Discovered Orbiting Jupiter

Among the moons is Valetudo, which appears to have smashed into several of Jupiter’s large moons and broken them apart.

May 2018 recovery images of Valetudo from Carnegie's Magellan telescope's at its Las Campanas Observatory in Chile. The moon can be seen moving relative to the steady state background of distant stars. Jupiter is not in the field but off to the upper left. | Carnegie Institution for Science
Carnegie Institution for Science