When Pluto was reclassified as a dwarf planet in 2006, it became the largest of 5 known dwarf planets in our solar system: Pluto, Ceres, Eris, Makemake and Haumea. Like planets, they are roughly spherical but unlike planets they have not cleared the neighbourhood of their orbit. Despite being smaller than Earth’s moon, four of them have their own moons.
(https://bit.ly/39hldPo, https://bit.ly/3jofiwk)