Wagner (crater)

Last updated
Wagner
Planet Mercury
Coordinates 68°06′S114°42′W / 68.1°S 114.7°W / -68.1; -114.7 Coordinates: 68°06′S114°42′W / 68.1°S 114.7°W / -68.1; -114.7
Diameter 134 km (84 mi)
Eponym Richard Wagner
View of the south polar region of Mercury taken by the spacecraft MESSENGER in 2008 MESSENGER looking Toward the South Pole of Mercury.png
View of the south polar region of Mercury taken by the spacecraft MESSENGER in 2008

Wagner is an impact crater in the south polar region of the planet Mercury. It was named after the German composer Richard Wagner (1813–1883) in 1976, as recognized by the International Astronomical Union. [1] It is located in the Bach quadrangle, between Bach and Chopin. [2]

Impact crater Circular depression on a solid astronomical body formed by a hypervelocity impact of a smaller object

An impact crater is an approximately circular depression in the surface of a planet, moon, or other solid body in the Solar System or elsewhere, formed by the hypervelocity impact of a smaller body. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Impact craters range from small, simple, bowl-shaped depressions to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth.

The poles of astronomical bodies are determined based on their axis of rotation in relation to the celestial poles of the celestial sphere. Astronomical bodies include stars, planets, dwarf planets and small Solar System bodies such as comets and minor planets, as well as natural satellites and minor-planet moons.

Mercury (planet) Smallest and closest planet to the Sun in the Solar System

Mercury is the smallest and innermost planet in the Solar System. Its orbital period around the Sun of 87.97 days is the shortest of all the planets in the Solar System. It is named after the Roman deity Mercury, the messenger of the gods.

Wagner is one of several craters on Mercury named after famous composers. Other examples include Brahms (after Johannes Brahms), Scarlatti (after Domenico Scarlatti), and Couperin (after Francois Couperin). [3] A number of Mercurian craters are named after historic cultural figures from different fields, including literature, philosophy, and art, but others feature names from popular culture, including Walt Disney and Muddy Waters. [4] [5]

Composer person who creates music, either by musical notation or oral tradition

A composer is a musician who is an author of music in any form, including vocal music, instrumental music, electronic music, and music which combines multiple forms. A composer may create music in any music genre, including, for example, classical music, musical theatre, blues, folk music, jazz, and popular music. Composers often express their works in a written musical score using musical notation.

Brahms is a crater on Mercury. It has a diameter of 100 kilometers. Its name was adopted by the International Astronomical Union (IAU) in 1979. Brahms is named for the German composer Johannes Brahms, who lived from 1833 to 1897.

Johannes Brahms German composer and pianist

Johannes Brahms was a German composer, pianist, and conductor of the Romantic period. Born in Hamburg into a Lutheran family, Brahms spent much of his professional life in Vienna, Austria. His reputation and status as a composer are such that he is sometimes grouped with Johann Sebastian Bach and Ludwig van Beethoven as one of the "Three Bs" of music, a comment originally made by the nineteenth-century conductor Hans von Bülow.

Notes

  1. IAU Gazetteer of Planetary Nomenclature, Wagner, accessed 20 December 2015
  2. IAU Gazetteer of Planetary Nomenclature, Map of the H-15 (Bach) Quadrangle of Mercury, accessed 20 December 2014
  3. "Map of Shakespeare quadrangle" (PDF). IAU. Retrieved 20 May 2013.
  4. "Nomenclature: Mercury, craters". IAU. Retrieved 20 May 2013.
  5. Rannals, Lee (21 December 2012). "Disney name goes interplanetary with impact crater identity". redorbit. Retrieved 20 May 2013.[ dead link ]


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