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- Mar 27, 2023
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To be classified as a dwarf planet by the International Astronomical Union (IAU), an object must meet the following criteria:Oh I forgot about eris
Name a of the requirements for ab object to be a dwarf planet
1. Orbit the Sun: The object must orbit the Sun and not be a moon of another celestial body.
2. Sufficient mass for hydrostatic equilibrium: The object must have enough mass for its gravity to pull it into a nearly round shape (achieve hydrostatic equilibrium), but it doesn't need to clear its orbital path of debris like a planet.
3. Not be a satellite: The object cannot be a satellite (moon) of another body, as moons have different classifications.
These criteria were established in 2006 when the IAU defined the term "dwarf planet" and designated Pluto, Eris, Haumea, Makemake, and Ceres as the first dwarf planets in our solar system.
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