The James Webb Space Telescope has identified a new moon orbiting Uranus at the outer edge of the Solar System. This moon, estimated to be approximately 10 kilometers in diameter, has eluded detection for decades since the Voyager-2 spacecraft performed a lunar survey around Uranus. No other planet possesses as many small inner moons as Uranus, and their intricate interconnections with the rings suggest a tumultuous history that blurs the distinction between a ring system and a moon system,” stated Matthew Tiscareno from the SETI Institute. The newly discovered moon is smaller and significantly fainter than the smallest of the previously identified inner moons, indicating that there may be even more complexities yet to be uncovered. This latest finding raises the total number of confirmed moons orbiting Uranus to an impressive 29. For comparison, Earth has only one moon. It is situated approximately 56,000 kilometers from the center of Uranus, orbiting within the planet’s equatorial plane between the orbits of Ophelia (which lies just outside Uranus’ main ring system) and Bianca,” remarked El Moutamid. “Its nearly circular orbit implies that it may have formed close to its current position.”
The new moon is the 14th member of the complex system of small moons that orbit inward of the larger moons Miranda, Ariel, Umbriel, Titania, and Oberon. Currently, the new moon does not have a name. NASA has indicated that any name for this newly discovered moon will require approval from the International Astronomical Union (IAU), the authoritative body responsible for assigning official names and designations to astronomical entities. This discovery is part of Webb’s General Observer program, which enables scientists globally to propose research utilizing the telescope’s advanced instruments. The high resolution and infrared sensitivity of the NIRCam instrument make it particularly effective at identifying faint, distant objects that were previously undetectable by earlier observatories.
