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Knobel Crater is an impact crater in the Mare Tyrrhenum quadrangle of Mars, located at 6.7°S latitude and 226.8°W longitude. It is128.6 km in diameter and was named after Edward Knobel, and the name was approved in 1973 by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN).
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Knobel (crater) Wikipedia(Text) CC BY-SA