Mosaic of 2026 ED138 discovery images
Credit: NSF–DOE Vera C. Rubin Observatory/NOIRLab/SLAC/AURA Image Processing: M. Jurić (UW), D. de Martin & M. Zamani (NSF NOIRLab), CC BY 4.0
A mosaic of images captured by NSF–DOE Vera C. Rubin Observatory of the newly discovered dwarf planet candidate 2026 ED138 (ED138). ED138 was discovered in observational data from Rubin spanning 4 March–11 July 2026. It was found by Rubin Operations team member and in-Kind contributor Matthew Holman (Center for Astrophysics | Harvard & Smithsonian), who contributes to improving Rubin's algorithms that search for distant moving objects in our Solar System. Its distance from the Sun places it beyond the orbit of Pluto, and initial analysis indicates that it may be among the largest and brightest bodies scientists have discovered in this region of the Solar System.
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