Hygiea
Asteroid Hygiea May Be Smallest Dwarf Planet in Our Solar System
nearly spherical in shape with a volume-equivalent radius of 217 ± 7 km, implying a density of 1,944 ± 250 kg m−3 to 1σ. rotation period for Hygiea ~13.8 h
Asteroid Hygiea May Be Smallest Dwarf Planet in Our Solar System
nearly spherical in shape with a volume-equivalent radius of 217 ± 7 km, implying a density of 1,944 ± 250 kg m−3 to 1σ. rotation period for Hygiea ~13.8 h