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Vera Rubin Observatory Finds New Dwarf-Planet Candidate ED138

By Drooid · Oct 28, 2026 · How we work

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Chile-based astronomers using the Vera C. Rubin Observatory discovered dwarf-planet candidate 2026 ED138.
ED138 measures 600–1,500 km in diameter, orbits ~46 AU from the Sun, and has a 281-year period with 25° inclination.
Matthew Holman first identified ED138 in October 2026, with Mario Juric adding 30 observations from March-July 2026, extending data to 2017.
Researchers plan ALMA infrared observations to confirm its size and dwarf-planet status.

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Chile-based astronomers using the Vera C. Rubin Observatory discovered dwarf-planet candidate 2026 ED138.
ED138 measures 600–1,500 km in diameter, orbits ~46 AU from the Sun, and has a 281-year period with 25° inclination.
Matthew Holman first identified ED138 in October 2026, with Mario Juric adding 30 observations from March-July 2026, extending data to 2017.
Researchers plan ALMA infrared observations to confirm its size and dwarf-planet status.