Which dwarf planet is the largest known?

Pluto is the largest and most massive of the widely recognized dwarf planets in the Solar System. Its diameter is about 2,377 kilometers, making it much smaller than Earth’s Moon but still the biggest object in its category. Pluto was reclassified from planet to dwarf planet by the International Astronomical Union in 2006. NASA’s New Horizons mission in 2015 revealed mountains, plains, and a thin atmosphere, showing Pluto to be a complex world. Its status and size continue to make it a focal point in planetary science.