Astronomy:Gledhill (crater)
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Short description: Crater on Mars
 Gledhill Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). | |
| Planet | Mars |
|---|---|
| Region | Hellas quadrangle |
| Coordinates | [ ⚑ ] : 53°12′S 87°06′E / 53.2°S 87.1°E |
| Diameter | 78.5 km |
Gledhill is an impact crater in the Hellas quadrangle of Mars, located at 53.2°S latitude and 87.1°E longitude. It is 78.5 km in diameter. It was named after British astronomer Joseph Gledhill, and the name was approved in 1973 by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN).[1]
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.[2] The peak is caused by a rebound of the crater floor following the impact.[3] Gledhill Crater shows a central peak in a picture on this page.
See also
References
- ↑ "Gazetteer of Planetary Nomenclature | Gledhill". International Astronomical Union. http://planetarynames.wr.usgs.gov/Feature/2188.
- ↑ "Stones, Wind, and Ice: A Guide to Martian Impact Craters". http://www.lpi.usra.edu/publications/slidesets/stones/.
- ↑ Hugh H. Kieffer (1992). Mars. University of Arizona Press. ISBN 978-0-8165-1257-7. https://books.google.com/books?id=NoDvAAAAMAAJ. Retrieved 7 March 2011.
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