Rubin Observatory Finds Hidden Dwarf

Astronomers running Rubin Observatory data and a new search code have identified 2026 ED138, a distant object about 46 AU from the Sun whose diameter is estimated at 600–1,500 km. If follow‑up observations confirm it is massive enough to be spherical, it would qualify as the solar system's sixth recognized dwarf planet; archival sightings dating back to 2016 helped map its orbit. — Shows how next‑generation survey telescopes and large archival datasets are reshaping our picture of the outer solar system and the population of large trans‑Neptunian objects.