HiRISE | Dunes on Western Edge of Hellas Planitia (ESP_017473

NASA/JPL/University of Arizona

Dunes on Western Edge of Hellas Planitia
ESP_017473_1385 Science Theme: Aeolian Processes

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Acquisition date:	18 April 2010	Local Mars time:	3:23 PM
Latitude (centered):	-41.4 degrees	Longitude (East):	46.5 degrees
Range to target site:	257.9 km (161.2 miles)	Original image scale range:	51.6 cm/pixel (with 2 x 2 binning) so objects ~155 cm across are resolved
Map projected scale:	50 cm/pixel and North is up	Map projection:	EQUIRECTANGULAR
Emission angle:	0.3 degrees	Phase angle:	81.4 degrees
Solar incidence angle:	81 degrees, with the Sun about 9 degrees above the horizon	Solar longitude:	79.4 degrees, Northern Spring
For non-map projected products:
North azimuth:	97 degrees	Sub-solar azimuth:	50.6 degrees
For map-projected products
North azimuth:	270 degrees	Sub solar azimuth:	223.9 degrees

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All of the images produced by HiRISE and accessible on this site are within the public domain: there are no restrictions on their usage by anyone in the public, including news or science organizations. We do ask for a credit line where possible: Image: NASA/JPL/University of Arizona

Postscript
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.