Holden is a 140 km wide crater situated within the Margaritifer Sinus quadrangle (MC-19) region of the planet Mars, located with the southern highlands. It is named after American astronomer Edward Singleton Holden. It is part of the Uzboi-Landon-Morava (ULM) system.
Uzboi Vallis is a valley lying situated within the Margaritifer Sinus quadrangle (MC-19) region on Mars. It is named after the Uzboy dry channel, now in Turkmenistan, which repeatedly served as the main channel of the Amu Darya river. The valley begins on the northern rim of the Argyre basin, and cuts through several craters, before ending at Holden crater.
In astrogeology, chaos terrain, or chaotic terrain, is a planetary surface area where features such as ridges, cracks, and plains appear jumbled and enmeshed with one another. Chaos terrain is a notable feature of the planets Mars and Mercury, Jupiter's moon Europa, and the dwarf planet Pluto. In scientific nomenclature, "chaos" is used as a component of proper nouns.
Eberswalde, formerly known as Holden NE, is a partially buried impact crater in Margaritifer Terra, Mars. Eberswalde crater lies just to the north of Holden, a large crater that may have been a lake. The 65.3-km-diameter crater, centered at 24°S, 33°W, is named after the German town of the same name, in accordance with the International Astronomical Union's rules for planetary nomenclature. It was one of the final four proposed landing sites for the Mars rover Mars Science Laboratory mission. This extraterrestrial geological feature lies situated within the Margaritifer Sinus quadrangle (MC-19) region of Mars. Although not chosen, it was considered a potential landing site for the Mars 2020 Perseverance rover, and in the second Mars 2020 Landing Site Workshop it survived the cut and was among the top eight sites still in the running.
Nirgal Vallis is a long river channel bordering the Coprates quadrangle and Margaritifer Sinus quadrangle of Mars at 28.4° south latitude and 42° west longitude. It is 610 km long and is named after Nergal, the Babylonian god of war and counterpart to the Roman god of war Mars. Nirgal Vallis had a discharge of 4800 cubic meters/second. The western half of Nirgal Valles is a branched system, but the eastern half is a tightly sinuous, deeply entrenched valley. Nirgal Valles ends at Uzboi Vallis. Tributaries are very short and end in steep-walled valley heads, often called "amphitheater-headed valleys." The shape of these valley heads is like cirques on the Earth.
The Ladon Valles are a river valley system lying within the Margaritifer Sinus quadrangle (MC-19) region of the planet Mars located at 22.6° South and 28.7° West. They are 278 km long and were named after an ancient name for a Greek river.
Timbuktu is an old crater on Mars, located in the Margaritifer Sinus quadrangle (MC-19) region at 5.7° S and 37.6° W. It measures approximately 65.68 kilometres (40.81 mi) in diameter and was named after the ancient city of Timbuktu in Mali, Africa. The crater has numerous cracks that form an irregular figure similar to the streets found in Timbuktu.
Sibu is an impact crater that lies within the Margaritifer Sinus quadrangle (MC-19) region on the surface of the planet Mars, in the Valles Marineris hemisphere in an area southeast of the crater Jones.
Santa Maria is an impact crater on Mars, located at 2.172°S, 5.445°W within the Meridiani Planum extraterrestrial plain, lying situated within the Margaritifer Sinus quadrangle (MC-19) region.
Sklodowska is a crater on Mars, located in the Mare Acidalium quadrangle. It was named after Polish chemist and first female Nobel Laureate Marie Skłodowska Curie (1867–1934). The naming was approved in 1973, by the International Astronomical Union's Working Group for Planetary System Nomenclature.
Suzhi is an impact crater on Mars, located in the Iapygia quadrangle at 27.7°S and 274.0°W. It measures 24.63 kilometres (15.30 mi) in diameter and was named by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature in 1991 after a place in China. There may have been a lake in the crater in the past because layers are visible in a depression on the floor.
Richardson is a crater in the Mare Australe quadrangle on Mars, located at 72.6°S and 180.4°W. It measures 95.9 kilometers in diameter and was named after Lewis Fry Richardson. The name was approved by the International Astronomical Union in 1973.
Wells is an impact crater in the Eridania quadrangle on Mars. The crater was named after English writer H. G. Wells (1866–1946). The name was approved in 1973, by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature. Wells is the author of the science-fiction novel The War of the Worlds, depicting an invasion of earth by Martians.
Niesten is an impact crater on Mars, located in the Iapygia quadrangle at 28.3°S latitude and 302.3°W longitude. It measures 115 kilometers in diameter and was named after Belgian astronomer Louis Niesten. The name was approved by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature in 1973.
Vinogradsky is an impact crater in the Eridania quadrangle of Mars, located at 56.5°S latitude and 216.2°W longitude. It measures 64 kilometres (40 mi) in diameter and was named after Sergei Winogradsky. The name was approved in 1973, by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature.
Tyndall is an impact crater in the Cebrenia quadrangle of Mars, located at 40.0°N latitude and 190.1°W longitude. It measures approximately 87 kilometres (54 mi) in diameter and was named after Irish physicist John Tyndall (1820–1893). The name was approved in 1973, by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature.
Lambert is an impact crater in the Sinus Sabaeus quadrangle of Mars, located at 20.2°S latitude and 334.7°W longitude. It is 92 km in diameter. It was named after Swiss physicist and astronomer Johann Heinrich Lambert, and the name was approved in 1973.
Millochau is an impact crater on Mars, located in the Iapygia quadrangle at 21.4°S latitude and 275.0°W longitude. It measures 115 kilometers in diameter and was named after French astronomer Gaston Millochau. The naming was approved by IAU's Working Group for Planetary System Nomenclature in 1973.
Priestley is an impact crater in the Eridania quadrangle of Mars, located at 54.4°S latitude and 229.4°W longitude. It measures 41.9 km (26.0 mi) in diameter and was named after English clergyman and scientist Joseph Priestley. The naming was approved by the International Astronomical Union's Working Group for Planetary System Nomenclature in 1973.
Smith is an impact crater on Mars, located in the Mare Australe quadrangle at 66.1°S latitude and 102.9°W longitude. It measures 74.33 kilometres (46.19 mi) in diameter and was named after English geologist William Smith (1769–1839). The name was approved by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature in 1973.
Part of eastern Vinogradov crater, as seen by CTX camera (on MRO).
Fans within Luba crater, located on north rim of Vinogradov crater. This is an enlargement of the top part of the previous image.
Map showing location of Vinogradov Crater and other, nearby features
