Astronomers Spot Potential Dwarf Planet Beyond Pluto Using New Telescope Data

New Candidate Spotted in the Outer Solar System

Astronomers have identified a potential new dwarf planet beyond Pluto, provisionally designated as ED138. The finding places the object among a select group of recognized trans-Neptunian bodies once future observations confirm its characteristics.

The discovery emerged from data gathered by the Vera C. Rubin Observatory, a facility equipped with a massive digital camera located on a mountain peak in Chile. Smithsonian senior astrophysicist Matthew Holman used a custom computer program to sift through billions of moving object detections recorded earlier in the year.

Tracking and Confirming the Distant Object

After the initial detection, Holman collaborated with University of Washington professor Mario Jurić to cross-reference the catalog. Jurić successfully located 20 additional observations dating back to March, allowing the research team to trace the orbital path of the object over a span of ten years.

Despite these findings, researchers emphasize that ED138 is not yet an officially verified planetary body. Scientists must determine its precise physical dimensions, a process expected to take several months.

Characteristics of the Trans-Neptunian Candidate

Calculations estimate that the diameter of ED138 spans between 600 and 1,500 kilometers, placing it ahead of Ceres as the smallest recognized dwarf body. Operating at an orbital distance of approximately 46 astronomical units from the sun, the object qualifies as a classical trans-Neptunian body residing well past Neptune.

The object remained hidden for years partly due to its southern hemisphere location, which limits visibility from northern telescopes, and its trajectory across the crowded background stars of the Milky Way galaxy. Experts believe that ongoing surveys by the Rubin Observatory will likely uncover additional objects of similar scale in the future.

Sources: CNN, CNN, Space, The New York Times.