10_hygiea | averagespeed | 1676 (kilometreperseconds) <tsp> 10_hygiea | orbitalperiod | 557 (days) <tsp> 10_hygiea | discoverer | annibale_de_gasparis <tsp> 10_hygiea | epoch | 2015-06-27 <tsp> 10_hygiea | apoapsis | 52395158233968 (kilometres) <sep> 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 kilometres (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 
the average speed of 10 hygiea is 16.76 km per secs and it has an orbital period of 5.57 days and annibale de gasparis discovered it.its epoch date was on june 27th 2015 and it has an apoapsis of 523951582.33968 kilometres.hygiea is the fourth-largest asteroid in the solar system