Koga (crater)

MarsGeo-Crater


name=Koga
diameter=19 km
latitude=29.3
N_or_S=S
longitude=103.8
E_or_W=W
eponym = Koga, Tanzania

Koga is a Martian impact crater, approximately 19 kilometers in diameter. It is located at 29.3°S, 103.8°W, north of the crater Virrat and northeast of the crater Dinorwic. To the north is the crater Nhill. It is named after a town in Tanzania, and its name was approved by the International Astronomical Union in 1991. [cite web
title=USGS Astro: Planetary Nomenclature: Feature Data Search Results | work=USGS Gazetteer of Planetary Nomenclature Feature Information
url=http://planetarynames.wr.usgs.gov/jsp/FeatureNameDetail.jsp?feature=63239
accessdate=October 23
accessyear=2007] "NASA World Wind" 1.4. NASA Ames Research Center, 2007.] According to a surface age map of Mars based on US Geological Survey data, the area around Koga is from the Noachian epoch, which places the area's age at 3.8 to 3.5 billion years ago. [cite web
title=INTEGRATING GLOBAL-SCALE MISSION DATASETS – UNDERSTANDING THE MARTIAN CRUST. | work=lpi.usra.edu
url=http://www.lpi.usra.edu/meetings/lpsc2005/pdf/1853.pdf
accessdate=October 23
accessyear=2007] Sharp blocks and cliffs poke through a mantle of fine material located at the bottom of the crater. [cite web
title=THEMIS Image of the Day: Koga Crater (Released 18 August 2003) | work=themis.asu.edu
url=http://themis.asu.edu/zoom-20030818a
accessdate=October 23
accessyear=2007] At the deepest part of the crater, it is about 5,200 meters in elevation above zero altitude, and its rim averages about 6,400 meters above zero altitude. It is therefore approximately 1.2 kilometers deep.

References