A Small, Double-Ringed Crater
NASA/JPL/University of Arizona

A Small, Double-Ringed Crater
ESP_028162_2310  Science Theme: Impact Processes
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This small, 230-meter crater formed by the impact of an asteroid onto a lobate flow deposit on Mars.

These deposits are surmised to have formed by the flow of glacial material on the surface of the planet. Ground-penetrating radar data from SHARAD, the radar sounder aboard MRO, show that a large abundance of ice is under the surface.

The impact penetrated through the material and into the substrate and formed this "double crater" as it excavated material from these two layers of different strengths.

Written by: Eldar Noe (audio by Tre Gibbs)   (19 September 2012)

This is a stereo pair with ESP_028083_2310.



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Acquisition date:29 July 2012 Local Mars time: 3:18 PM
Latitude (centered):50.889° Longitude (East):175.058°
Range to target site:307.0 km (191.9 miles)Original image scale range:30.7 cm/pixel (with 1 x 1 binning) so objects ~92 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:2.4° Phase angle:52.5°
Solar incidence angle:55°, with the Sun about 35° above the horizon Solar longitude:147.0°, Northern Summer
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North azimuth:97° Sub-solar azimuth:340.2°
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North azimuth:270°Sub solar azimuth:155.5°

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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.