Kunowsky (Martian crater)
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Planet | Mars |
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Coordinates | 57°06′N 9°42′W / 57.1°N 9.7°WCoordinates: 57°06′N 9°42′W / 57.1°N 9.7°W |
Diameter | 67.4 km |
Eponym | George K. Kunowsky, a German astronomer (1786-1846) |
Kunowsky is a large crater in the Mare Acidalium quadrangle of Mars, located at 57.1° north latitude and 9.7° west longitude. It is 67.4 km in diameter and was named after George K. Kunowsky, a German astronomer (1786–1846).[1] Because it lies on a large flat plain, Kunowsky is easy to spot on maps and pictures. It lies in the northern hemisphere just south of the very large crater Lomonosov.[2] South are hills known as Ortygia Colles.
Impact craters generally have a rim with ejecta around them, in contrast volcanic craters usually do not have a rim or ejecta deposits. As craters get larger (greater than 10 km in diameter) they usually have a central peak.[3] The peak is caused by a rebound of the crater floor following the impact.[4] If one measures the diameter of a crater, the original depth can be estimated with various ratios. Because of this relationship, researchers have found that many Martian craters contain a great deal of material; much of it is believed to be ice deposited when the climate was different.[5] Sometimes craters expose layers that were buried. Rocks from deep underground are tossed onto the surface. Hence, craters can show us what lies deep under the surface.
- Kunowsky Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter).
See also
References
Wikimedia Commons has media related to Kunowsky (Martian crater). |
- ↑ "Gazetteer of Planetary Nomenclature | Kunowsky". usgs.gov. International Astronomical Union. Retrieved 4 March 2015.
- ↑ Moore, P. et al. 1990. The Atlas of the Solar System. Cresent Books. NY
- ↑ http://www.lpi.usra.edu/publications/slidesets/stones/
- ↑ Hugh H. Kieffer (1992). Mars. University of Arizona Press. ISBN 978-0-8165-1257-7. Retrieved 7 March 2011.
- ↑ Garvin, J., et al. 2002. Global geometric properities of martian impact craters. Lunar Planet Sci. 33. Abstract @1255.