It may join Pluto. In the Solar System, we have a candidate for a dwarf planet

The discovery of ED138, a potential dwarf planet, was made using data from the Very Large Telescope in Chile. Matthew Holman from the Smithsonian Institution detected a signal indicating its existence while analyzing dark matter data. Collaborating with Mario Juric from the University of Washington, they traced the object's orbit back ten years. ED138 is located about 46 astronomical units from the Sun, making it a trans-Neptunian object. Its diameter is estimated between 600 and 1500 kilometers. The discovery was challenging due to its position in the southern hemisphere, limiting telescope access. If confirmed as a dwarf planet, it will receive a permanent number and name, with Holman receiving name suggestions from the public.