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10 Hygiea is a major asteroid located in the main asteroid belt.With a mean diameter of between 425 and 440 km and a mass estimated to be 3% of the total mass of the belt, [11] it is the fourth-largest asteroid in the Solar System by both volume and mass, and is the largest of the C-type asteroids (dark asteroids with a carbonaceous surface) in classifications that use G type for 1 Ceres.
Location and structure of the Hygiea family. By far the largest member is 10 Hygiea, a 400 km diameter C-type asteroid that is the fourth largest in the belt. The remaining members are much smaller so Hygiea contains about 94–98% of the mass in the family (depending on the exact criteria for inclusion).
For example, if a TNO is incorrectly assumed to have a mass of 3.59 × 10 20 kg based on a radius of 350 km with a density of 2 g/cm 3 but is later discovered to have a radius of only 175 km with a density of 0.5 g/cm 3, its true mass would be only 1.12 × 10 19 kg.
Even Hygiea and Interamnia rarely reach magnitudes of above 10.0. This is due to the different distributions of spectral types within different sections of the asteroid belt: the highest-albedo asteroids are all concentrated closer to the orbit of Mars , and much lower albedo C and D types are common in the outer belt.
Pallas (minor-planet designation: ... 4 Vesta, 10 Hygiea, 704 Interamnia, 15 Eunomia, the remainder of the asteroid belt, and 1 Ceres. The unit of mass is ...
The following is a partial list of minor planets, running from minor-planet number 1 through 1000, ... 10 Hygiea: J: Hygiea: April 12, 1849: Naples: A. de Gasparis: HYG:
The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...
This asteroid was the 3rd to be discovered and is 9th in mass ranking (1 Ceres, 2 Pallas, 4 Vesta, 10 Hygiea, 511 Davida, 704 Interamnia, 65 Cybele, 52 Europa are considerably bigger and more massive). In mythology Juno is the Roman equivalent of the Greek Hera. Hera was a very important goddess in both Greek and Roman culture.