PIA18773: A Possible Landing Site in Aram Dorsum for the ExoMars Rover
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Reconnaissance Orbiter (MRO)
 Spacecraft:  Mars Reconnaissance Orbiter (MRO)
 Instrument:  HiRISE
 Product Size:  2880 x 1800 pixels (w x h)
 Produced By:  University of Arizona/HiRISE-LPL
Other products from image ESP_037030_1880
 Full-Res TIFF:  PIA18773.tif (15.56 MB)
 Full-Res JPEG:  PIA18773.jpg (608.6 kB)

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One of the important roles of HiRISE is to take high resolution images of potential landing sites for future landing missions.

This image is of an area called Aram Dorsum (also known by its old name, Oxia Palus) that has been suggested for the 2018/2020 ExoMars Rover, because it contains an ancient, exhumed alluvial system.

Imaging is needed both to check for boulder fields and other obstacles, as well as checking the scientific justification for choosing a site. This image is one part of what we call a stereo observation, where taking a view at a different angle from another orbit of the same areas will allow a 3D model (a digital terrain model) to be prepared. With this model, accurate measurements of slopes can then be made. Although it won't show the exhumed alluvial system, images of the area are needed to characterize the landing site.

The main image of the Aram Dorsum site contains a relatively fresh, 150-meter diameter impact crater with associated boulders. This small (1 kilometer square) part also shows signs of erosion into an overlying plateau, plus recent formation of some transverse aeolian ridges (called TARs) within the resulting valley. Overall, however, the site has relatively few obstacles for a lander.

This is a stereo pair with ESP_036740_1880.

HiRISE is one of six instruments on NASA's Mars Reconnaissance Orbiter. The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.

Image Credit:
NASA/JPL-Caltech/Univ. of Arizona

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