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Smaller trans-Neptunian objects have been called dwarf planets if they appear to be solid bodies, which is a prerequisite for hydrostatic equilibrium: planetologists generally include at least Gonggong, Orcus, and Sedna.
Our solar system has five dwarf planets. In order of distance from the Sun they are: Ceres, Pluto, Haumea, Makemake, and Eris.
A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be gravitationally rounded, but insufficient to achieve orbital dominance like the eight classical planets of the Solar System.
There are many possible dwarf planets in the Solar System. Scientists do not know how many there are exactly. They say there may be up to 200 in the Kuiper Belt. [1] They also say there may be over 10,000 beyond this. [2]
Meet the dwarf planets in our solar system. Learn the dwarf planet definition and get a list of bodies that qualify.
The IAU currently recognizes five dwarf planets: Ceres, Pluto, Haumea, Makemake, and Eris. Ceres lies in the main asteroid belt between Mars and Jupiter, while the rest are in the Kuiper Belt. There are almost certainly more dwarf planets. Unfortunately, most are very far away, and we can’t definitively prove that they are round.
The "dwarf planets" are all of those objects which are not one of the eight dominant bodies (Mercury through Neptune) yet still, at least in one way, resemble a planet. In other words, a dwarf planet is something that looks like a planet, but is not a planet.
Dwarf Planets. Here is a list of dwarf planets ordered in their distance from the Sun.
There are eight "classical" planets and 19 widely-recognized (but not univerally accepted) dwarf planets in our solar system. These are the eight planets that have been known for hundreds if not thousands of years. Pluto was discovered in 1930 and demoted as a planet in 2006. Planets are shown by distance from the Sun. Mercury.
Our solar system has eight planets, and five officially recognized dwarf planets. Which planet is biggest? Which is smallest? What is the order of the planets as we move out from the Sun? This is a simple guide to the sizes of planets based on the equatorial diameter – or width – at the equator of each planet.