# 2026 ED 183 Identified as Massive New Dwarf Planet Candidate > A space object dubbed 2026 ED 183, measuring 370-930 miles across, has been flagged as a potential dwarf planet after analysis of Vera C. Rubin telescope data. - Publisher: Briefzora (https://briefzora.com) - URL: https://briefzora.com/2026-ed-183-identified-as-massive-new-dwarf-planet-candidate - Published: 2026-10-29T04:46:38+05:00 - Author: Briefzora Desk (https://briefzora.com/author/briefzora-desk) - Section: Technology - Topics: Space and astronomy - Image: https://briefzora.com/uploads/2026/10/massive-new-dwarf-planet-found-in-solar-system-as-surprising-reason-mb93ff.webp ## Key points - The object temporarily named 2026 ED 183 measures between 370 and 930 miles wide. - Discovery resulted from analyzing Vera C. Rubin telescope data collected in 2026. - Astronomers Matthew Holman and Mario Jurić traced 20 earlier sightings back to March 2026. - 2026 ED 183 lies in the southern hemisphere, a region less surveyed by most telescopes. - The candidate is not yet an official dwarf planet; size confirmation may take a few months. ## Why it matters Astronomers worldwide will assess whether 2026 ED 183 joins the known dwarf planets, expanding our understanding of the Solar System's small bodies. ## Article A massive new potential dwarf planet, temporarily called 2026 ED 183, has been identified after Harvard astronomer Matthew Holman processed Vera C. Rubin telescope data collected in 2026. The object measures between 370 and 930 miles in diameter, which would make it wider than the United Kingdom if the upper estimate is correct. Holman ran a high-tech computer program through billions of moving objects captured by the ultra-powerful telescope perched on an 8,800-ft mountain in Chile. When the candidate appeared, he felt "excited disbelief" and immediately double-checked the result. Working with scientist Mario Jurić, the team added 20 earlier sightings of the object dating back to March 2026. ## What defines a dwarf planet? A space body must meet three criteria to be called a planet. It must orbit the Sun, be massive enough for its gravity to shape it into a sphere, and clear its orbital neighborhood of similar objects. - Orbits the Sun - Large enough for a spherical shape - Has not cleared its orbital zone Dwarf planets satisfy the first two conditions but not the third. Six dwarf planets are currently recognized: Ceres, Pluto, Haumea, Makemake, Eris and Hygiea. ## Why the discovery took so long Tracking moving objects within the Milky Way is extremely challenging, which delayed the identification of this "pesky space sphere." Holman, a lecturer at Harvard University, explained that most searches focus on the northern sky, while 2026 ED 183 resides in the southern hemisphere. Although invisible to the naked eye, the object is bright enough for capable amateur astronomers to spot if they know where to look. ## Next steps for 2026 ED 183 Holman warned that the object is still a candidate. "At this point, it's still a candidate. We really need to know how physically big it is, and that will take a few months, probably," he said. If granted dwarf-planet status, the rocky world will receive a new Greek name, though the naming process remains unclear. "People have already emailed me some suggestions, and some of them are already taken by other objects," Holman noted. Associate professor Michele Bannister, not involved in the discovery, speculated that a future spacecraft might find a nitrogen glacier similar to Pluto's, but emphasized that current knowledge is limited to size. ## Frequently asked questions ### What is the size range of 2026 ED 183? It is estimated to be between 370 and 930 miles in diameter. ### Who discovered 2026 ED 183? Harvard astronomer Matthew Holman, using data from the Vera C. Rubin telescope, identified the object. ### Why was the object only found now? Its location in the southern hemisphere and the difficulty of tracking moving objects in the Milky Way delayed its detection. --- When citing, please link to https://briefzora.com/2026-ed-183-identified-as-massive-new-dwarf-planet-candidate and name Briefzora as the source.