A New Impact Site
NASA/JPL/University of Arizona

A New Impact Site
ESP_029015_1705  Science Theme: Impact Processes
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This observation shows a cluster of impact craters that formed between August 2005 and November 2010, first discovered in a Context Camera (CTX) image G05_020035_1699_XN_10S064W_101104.

What's unusual about this site is that it isn't as dusty as most places where new impacts are discovered. Often the airblast disturbs the dust to create a dark spot much larger than the crater and its ejecta, so the new impacts are most easily discovered over dusty terrains.

The dark ejecta is obvious while the larger dark spot here is subtle, but detectable in the CTX image. There is a tight cluster of craters rather than a single crater because rocky bolides often break up in the Martian atmosphere.

Written by: Alfred McEwen (audio by Tre Gibbs)   (7 November 2012)

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Acquisition date:04 October 2012 Local Mars time: 3:39 PM
Latitude (centered):-9.246° Longitude (East):295.828°
Range to target site:257.0 km (160.6 miles)Original image scale range:25.7 cm/pixel (with 1 x 1 binning) so objects ~77 cm across are resolved
Map projected scale:25 cm/pixel and North is upMap projection:Equirectangular
Emission angle:1.2° Phase angle:56.4°
Solar incidence angle:55°, with the Sun about 35° above the horizon Solar longitude:182.7°, Northern Autumn
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North azimuth:97° Sub-solar azimuth:10.3°
For map-projected products
North azimuth:270°Sub solar azimuth:185.0°

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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.