A Fresh Crater near Sirenum Fossae
A Fresh Crater near Sirenum Fossae
ESP_040663_1415  Science Theme: Mass Wasting Processes
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)
Acquisition date
30 March 2015

Local Mars time

Latitude (centered)

Longitude (East)

Spacecraft altitude
254.0 km (157.9 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

Emission angle

Phase angle

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

Solar longitude
317.5°, Northern Winter

For non-map projected images
North azimuth:  96°
Sub-solar azimuth:  29.8°
Black and white
map projected  non-map

IRB color
map projected  non-map

Merged IRB
map projected

Merged RGB
map projected

RGB color
non-map projected

Black and white
map-projected   (502MB)

IRB color
map-projected   (307MB)

Black and white
map-projected  (220MB)
non-map           (296MB)

IRB color
map projected  (77MB)
non-map           (261MB)

Merged IRB
map projected  (136MB)

Merged RGB
map-projected  (128MB)

RGB color
non map           (259MB)
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products

IRB: infrared-red-blue
RGB: red-green-blue
About color products (PDF)

Black & white is 5 km across; enhanced color about 1 km
For scale, use JPEG/JP2 black & white map-projected images

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

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. The HiRISE camera was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona.