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Ceres' shape is controlled mainly by gravity and spin, with only a 3% departure from hydrostatic equilibrium. Its best-fit shape is a triaxial ellipsoid with dimensions a = 483.1 km, b = 481.0, km and c = 445.9 km, with c being the north-south axis and a and b the semimajor and semiminor equatorial axes.
The geology of the dwarf planet, Ceres, was largely unknown until Dawn spacecraft explored it in early 2015. However, certain surface features such as "Piazzi", named after the dwarf planets' discoverer, had been resolved.[a] Ceres's oblateness is consistent with a differentiated body, a rocky core overlain with an icy mantle.
The active geology of Ceres is driven by ice and brines. Water leached from rock is estimated to possess a salinity of around 5%. Altogether, Ceres is approximately 50% water by volume (compared to 0.1% for Earth) and 73% rock by mass. [14] Ceres's largest craters are several kilometres deep, inconsistent with an ice-rich shallow subsurface.
Ceres is saturated with impact craters.Many have a central pit or bright spot. In the first batch of 17 names approved by the IAU, craters north of 20° north latitude had names beginning with A–G (with Asari being the furthest north), those between 20° north and south latitude beginning with H–R, and those further south beginning with S–Z (with Zadeni being the furthest south).
Liberalia Mons is a mountain on the surface of the dwarf-planet Ceres. [2] Liberalia Mons is located in the north-western hemisphere of Ceres. It is to the north-west of Ahuna Mons, the east of Samhain Catenae, and west of Rongo. [3] Liberalia Mons is the largest mountain on Ceres in terms of base area. It has a diameter of roughly 90 ...
The brightest cluster of spots ("Spot 5") is located in an 80-kilometer (50 mi) crater called Occator, [1] [2] which is located at 19.86° N latitude; 238.85 E longitude. [1] [2] Spots on Ceres from different angles. The spot in the center of the crater is named Cerealia Facula, [16] and the group of spots to the east - Vinalia Faculae. [17]
The Dictionary of Occupational Titles lists the following occupations in Geology, which it describes as "concerned with the investigation of the composition, structure, and physical and biological history of the earth's crust and the application of this knowledge in such fields as archeology, mining, construction, and environmental impact": [1]
[10] [11] Crater counts suggest that formation of the mountain continued into the last several hundred million years, making this a relatively young geological feature. [ 8 ] Ahuna Mons is associated with a positive mass anomaly, or mascon , centered about 32–36 km (20–22 mi) below it, not far above the crust-mantle boundary.