 Ezinu (top) and Nawish (bottom) | |
| Location | Ceres |
|---|---|
| Coordinates | 43°12′N195°42′E / 43.2°N 195.7°E [1] |
| Diameter | 119.93 kilometres (74.52 mi) |
| Naming | Sumerian goddess of grain |
Ezinu is a large crater on Ceres, located within the Hanami Planum. It was officially named in 2015 by the IAU after a Sumerian goddess of grain. [1]
The floor of Ezinu is home to a series of fractures, which are up to 200 metres deep and stretch for 22.7 km. [2] These fractures were theorised in a 2018 study to have been formed as a result of subsurface low-viscosity material flowing into the crater. [2]
Alphonsus is an ancient impact crater on the Moon that dates from the pre-Nectarian era. It is located on the lunar highlands on the eastern end of Mare Nubium, west of the Imbrian Highlands, and slightly overlaps the crater Ptolemaeus to the north. To the southwest is the smaller Alpetragius. The crater name was approved by the IAU in 1935.
Degas is a rayed crater on Mercury at latitude 37.5 N, longitude 127 W. Its diameter is 54 kilometres (34 mi). It was named after the French impressionist painter Edgar Degas in 1979. The rays consist of light colored material blasted out during the crater's formation. Craters older than Degas are covered by the ray material, while younger craters are seen superimposed on the rays. Degas forms a crater pair with Brontë to the north. Both lie near the center of Sobkou Planitia.
Arabia Terra is a large upland region in the north of Mars that lies mostly in the Arabia quadrangle, but a small part is in the Mare Acidalium quadrangle. It is densely cratered and heavily eroded. This battered topography indicates great age, and Arabia Terra is presumed to be one of the oldest terrains on the planet. It covers as much as 4,500 km (2,800 mi) at its longest extent, centered roughly at 21°N6°E with its eastern and southern regions rising 4 km (13,000 ft) above the north-west. Alongside its many craters, canyons wind through the Arabia Terra, many emptying into the large northern lowlands of the planet, which borders Arabia Terra to the north.
Ceres is a dwarf planet in the middle main asteroid belt between the orbits of Mars and Jupiter. It was the first known asteroid, discovered on 1 January 1801 by Giuseppe Piazzi at Palermo Astronomical Observatory in Sicily, and announced as a new planet. Ceres was later classified as an asteroid and then a dwarf planet, the only one inside Neptune's orbit.
The geology of solar terrestrial planets mainly deals with the geological aspects of the four terrestrial planets of the Solar System – Mercury, Venus, Earth, and Mars – and one terrestrial dwarf planet: Ceres. Earth is the only terrestrial planet known to have an active hydrosphere.
The Tolstoj quadrangle in the equatorial region of Mercury runs from 144 to 216° longitude and -25 to 25° latitude. It was provisionally called "Tir", but renamed after Leo Tolstoy by the International Astronomical Union in 1976. Also called Phaethontias.
Mozart is a crater on Mercury, named by the IAU in 1976 after Austrian composer Wolfgang Amadeus Mozart.
Ahuna Mons is the largest mountain on the dwarf planet and asteroid Ceres. It protrudes above the cratered terrain, is not an impact feature, and is the only mountain of its kind on Ceres. Bright streaks run top to bottom on its slopes which are thought to be salt, similar to the better known Cererian bright spots, and likely resulted from cryovolcanic activity from Ceres's interior. It is named after the traditional post-harvest festival Ahuna of the Sümi Naga people of India. In July 2018, NASA released a comparison of physical features, including Ahuna Mons, found on Ceres with similar ones present on Earth.
Occator is an impact crater located on Ceres, the largest object in the main asteroid belt that lies between the orbits of Mars and Jupiter, that contains "Spot 5", the brightest of the bright spots observed by the Dawn spacecraft. It was known as "Region A" in ground-based images taken by the W. M. Keck Observatory on Mauna Kea.
Kerwan is the largest confirmed crater and one of the largest geological features on Ceres. It was discovered on February 19, 2015 from Dawn images as it approached Ceres. The crater is distinctly shallow for its size, and lacks a central peak. A central peak might have been destroyed by a 15-kilometer-wide crater at the center of Kerwan. The crater is likely to be young relative to the rest of Ceres's surface, as Kerwan has largely obliterated the cratering in the southern part of Vendimia Planitia.
Haulani is an impact crater located on Ceres that contains "Spot 1", one of the bright spots observed by the Dawn spacecraft. The crater was named after Haulani, the Hawaiian goddess of plants. In July 2018, NASA released a comparison of physical features, including Haulani crater, found on Ceres with similar ones present on Earth.
Dantu is a large crater on Ceres, located within the Vendimia Planitia. It is rimmed by a number of minor faculae, which together form Bright Spot 2.
Ceres Polar Lander (CPL) is a European mission concept for a lander to Ceres that would search for biosignatures. Published in 2008, the concept calls for a low-cost mission using reliable existing technology to complement other larger missions. The original concept of the mission was to search for water ice and signs of life in permanently shadowed craters near Ceres' north pole. However, with new information from the Dawn mission, it is now thought that water ice can be found on other locations on Ceres and that Occator crater may be a more desirable scientific target.
The geology of Ceres consists of the characteristics of the surface, the crust and the interior of the dwarf planet Ceres. The surface of Ceres is comparable to the surfaces of Saturn's moons Rhea and Tethys, and Uranus's moons Umbriel and Oberon.
Achita is a large crater on Ceres.
Nawish is a crater on the dwarf planet Ceres. It is named after the Acoma guardian of the field. The name was officially approved by the International Astronomical Union (IAU) on 3 July 2015. It is the namesake of the Nawish Quadrangle.
Sintana is a large central peak crater in the Southern Hemisphere of the dwarf planet Ceres, located at 44.21° S, 76.4 ° E. It has a diameter of 58 km. The crater is named after the deity of the Kogi people of northern Colombia who produced fertile black earth. It was officially named by the International Astronomical Union (IAU) on July 3, 2015. It is the namesake of the Sintana Quadrangle.
Calathus is a proposed student-designed Ceres sample-return mission, that would consist of an orbiter and a lander with an ascent module. The orbiter would be equipped with a camera, a thermal imager, and a radar; the lander will have a sampling arm, a camera, and a gas chromatograph mass spectrometer. Mission objective is to return maximum 40 grams (1.4 oz) of Ceresian soil. The mission was designed and proposed in 2018 with support of ESA.
Oxo is a small impact crater on the dwarf planet Ceres. Located in Ceres's northern hemisphere, it is the second-brightest feature on Ceres. The crater was named after the Candomblé god of agriculture.
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