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476 Hedwig
Hedwig (minor planet designation: 476 Hedwig) (1901 GQ) is a main-belt asteroid discovered on August 17, 1901, by Luigi Carnera at Heidelberg. Named in honour of the wife of Swedish-Danish astronomer Elis Strömgren. See also * List of Solar System objects by size References External links * * Background asteroids Hedwig Hedwig Hedwig may refer to: People and fictional characters * Hedwig (name), a list of people and fictional characters with the given name * Grzegorz Hedwig (born 1988), Polish slalom canoeist * Johann Hedwig, (1730–1799), German botanist * Romanus Adol ... P-type asteroids (Tholen) X-type asteroids (SMASS) 19010817 {{beltasteroid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luigi Carnera
Luigi Carnera (born in Trieste April 14, 1875, died in Florence, July 30, 1962) was an Italian astronomer and mathematician. He discovered 16 minor planets in the early 20th century. The main-belt asteroid 39653 Carnera was named in his honour. In his early career he worked as Max Wolf's assistant at Heidelberg, Germany has discovered a number of asteroids. He worked in Germany, Italy and Argentina before returning to Italy for good in 1908. He was director of Trieste Observatory starting in 1919; Trieste had just been annexed to Italy following World War I. He then became director of Capodimonte Observatory in Naples starting in 1932 and until his retirement in 1950. In 1943 during World War II, the observatory was temporarily occupied by American and British troops in order to install a radar station. References External links * 1875 births 1962 deaths Discoverers of asteroids Discoveries by Luigi Carnera, * 20th-century Italian astronomers {{Italy-as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Main-belt Asteroid
The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called asteroids or minor planets. This asteroid belt is also called the main asteroid belt or main belt to distinguish it from other asteroid populations in the Solar System such as near-Earth asteroids and trojan asteroids. The asteroid belt is the smallest and innermost known circumstellar disc in the Solar System. About 60% of its mass is contained in the four largest asteroids: Ceres, Vesta, Pallas, and Hygiea. The total mass of the asteroid belt is calculated to be 3% that of the Moon. Ceres, the only object in the asteroid belt large enough to be a dwarf planet, is about 950 km in diameter, whereas Vesta, Pallas, and Hygiea have mean diameters less than 600 km. The remaining bodies range down to the size of a dust particle. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
P-type Asteroids (Tholen)
P-type asteroids are asteroids that have low albedo and a featureless reddish spectrum. It has been suggested that they have a composition of organic rich silicates, carbon and anhydrous silicates, possibly with water ice in their interior. P-type asteroids are found in the outer asteroid belt and beyond. There are in the neighborhood of 33 known P-type asteroids, depending on the classification, including 46 Hestia, 65 Cybele, 76 Freia, 87 Sylvia, 153 Hilda, 476 Hedwig and, in some classifications, 107 Camilla. Taxonomy An early system of asteroid taxonomy was established in 1975 from the doctoral thesis work of David J. Tholen. This was based upon observations of a group of 110 asteroids. The U-type classification was used as a miscellaneous class for asteroids with unusual spectra that didn't fit into the C-type asteroid, C and S-type asteroid classifications. In 1976, some of these U-type asteroids with unusual moderate albedo Albedo (; ) is the measure of the diffuse refl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
