10 Hygiea

Hygiea (minor-planet designation: 10 Hygiea) is a major asteroid and possible dwarf planet located in the main asteroid belt. With a diameter of 434
kilometers (270 mi) and a mass estimated to be 3% of the total mass of the belt, it is the fourth-largest asteroid in the Solar System by both volume and mass. In some spectral classifications it is the largest of the dark C-type asteroids with a carbonaceous surface, whereas in others it is second after 1 Ceres.
Observations taken with the Very Large Telescope's SPHERE imager in 2017 and 2018, and announced in late 2019, revealed that Hygiea is nearly spherical and is close to a hydrostatic equilibrium shape. The authors of the study therefore consider it a possible dwarf planet. However, Hygiea is conjectured to have been disrupted by an impact, with the subsequent debris reaccumulating, rather than being massive enough to be plastic. The disruptive impact produced the largest known collisional family.
Category:Asteroids
Category:C-type
Category:Geoasteroid
Category:Main Belt
Category:Objects Not in Hydrostatic Equilibrium
Category:Objects with No Atmosphere
Category:Inner Solar System Object
Category:Numbered Minor Planets
Category:Numbered Objects
Category:Named Objects
Category:Named Minor Planets