Dwarf Planet

A Dwarf Planet is a celestial body that orbits the Sun and is massive enough to be nearly round, but has not cleared other objects from the neighborhood of its orbit. Pluto is the best-known example.

In astronomy, a Dwarf Planet is a body that orbits the Sun, has enough gravity to assume a nearly round shape, and is not a moon, but has not gravitationally cleared its orbital neighborhood in the way a major planet has. Pluto was reclassified as a Dwarf Planet in 2006 under the modern astronomical definition. Other recognized Dwarf Planets include Ceres, Eris, Haumea, and Makemake. In astrology, Pluto continues to be used as an important chart factor despite its astronomical classification, and its symbolic interpretation is not dependent on whether astronomy labels it a planet or dwarf planet.

AKA / Related Terms:
Minor planet is a broader astronomical category and is not the same thing
Related to Pluto
Distinct from a major Planet