A Fresh Crater near Sirenum Fossae
NASA/JPL/University of Arizona
A Fresh Crater near Sirenum Fossae
ESP_040663_1415  Science Theme: Mass Wasting Processes
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This impact crater appears relatively recent as it has a sharp rim and well-preserved ejecta.

The steep inner slopes are carved by gullies and include possible recurring slope lineae on the equator-facing slopes. Fresh craters often have steep, active slopes, so we are monitoring this crater for changes over time.

The bedrock lithology is also diverse. The crater is a little more than 1-kilometer wide.

Note: When we say “fresh,” we mean on a geological scale. The crater is quite old on a human scale.

Written by: Alfred McEwen (audio: Tre Gibbs)   (3 June 2015)

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Acquisition date
30 March 2015

Local Mars time:
14:22

Latitude (centered)
-38.158°

Longitude (East)
184.754°

Range to target site
255.8 km (159.9 miles)

Original image scale range
25.6 cm/pixel (with 1 x 1 binning) so objects ~77 cm across are resolved

Map projected scale
25 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
6.5°

Phase angle:
43.8°

Solar incidence angle
38°, with the Sun about 52° above the horizon

Solar longitude
317.5°, Northern Winter

North azimuth:
96°

Sub-solar azimuth:
29.8°
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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:
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.