HiRISE | Recent Small Impact Crater (ESP_011834

NASA/JPL/University of Arizona

Recent Small Impact Crater
ESP_011834_1605 Science Theme: Impact Processes

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This HiRISE image of the Solis Planum region shows a relatively recent impact crater. The crater, about 400 meters across, displays numerous meter-scale and larger rocks.

These rocks are located on the crater wall and splayed out radially on the surrounding plains. The latter boulders are part of the ejecta, material blasted out of the Martian crust by the impact. The fact that the boulders are well preserved is evidence that the crater is fairly young.

Nevertheless, some ripples are visible on the crater floor, indicating that wind has had time to mobilize fine particles (sand and granules) into bedforms.

Written by: Nathan Bridges (9 March 2009)

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Acquisition date:	03 February 2009	Local Mars time:	3:52 PM
Latitude (centered):	-19.259 degrees	Longitude (East):	273.842 degrees
Range to target site:	254.4 km (159.0 miles)	Original image scale range:	25.5 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved
Map projected scale:	25 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	0.2 degrees	Phase angle:	56.9 degrees
Solar incidence angle:	57 degrees, with the Sun about 33 degrees above the horizon	Solar longitude:	203.2 degrees, Northern Autumn
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North azimuth:	97 degrees	Sub-solar azimuth:	6.1 degrees
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North azimuth:	270 degrees	Sub solar azimuth:	180.8 degrees

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For information about NASA and agency programs on the Web, visit: http://www.nasa.gov. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Mars Reconnaissance Orbiter for NASA's Science Mission Directorate, Washington. Lockheed Martin Space Systems is the prime contractor for the project and built the spacecraft. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. The image data were processed using the U.S. Geological Survey’s ISIS3 software.