Ceres, which has a significant amount of ice in its composition, is the only accepted dwarf planet in the asteroid belt, though there are unexplained anomalies.

Nov 26, 2019 · Fulfilling all the requirements makes Hygiea the smallest dwarf planet in the solar system, as researchers report in Nature Astronomy, taking the position from Ceres, which has …

Apr 29, 2025 · Dwarf planets like Pluto were defined as objects that orbit the Sun, and are nearly round, but have not been able to clear their orbit of debris. So far, the IAU has only recognized …

Nov 8, 2019 · Bottom line: Astronomers have found that Hygiea, an asteroid in the main asteroid belt, is round, which may mean it now can be classified as the smallest-known dwarf planet in …

Oct 28, 2019 · About 430 kilometers across, Hygiea would unseat Ceres, with its 950-kilometer diameter, as the smallest dwarf planet discovered in our solar system, researchers report …

Oct 28, 2019 · They found that Hygiea is spherical, potentially taking the crown from Ceres as the smallest dwarf planet in the Solar System.

A new study published Oct. 28, 2019 in the journal Nature Astronomy found that Hygiea is spherical, potentially making it the smallest dwarf planet in the solar system.

Aug 10, 2024 · Ceres has a diameter of about 950 km, making it the smallest of the known dwarf planets. Ceres is composed of rock and ice, containing approximately 25% water ice by mass.

These are the 5 dwarf planets in our solar system recognized and considered by IAU. There are thousands of more objects in the solar system to discover that may be a dwarf planet or most …

Jul 5, 2025 · In 2006, Pluto was famously demoted from a planet to a dwarf planet. It remains the most famous dwarf planet today, but there are others in our solar system, including potentially …