Weird Crater
NASA/JPL-Caltech/UArizona
Weird Crater
ESP_037237_1435  Science Theme: Landscape Evolution
This feature has a strange appearance, as if the crater has feet with toes sticking out of two sides. Let’s try to explain this.

First, there was a highly oblique impact event, with the bolide (or meteorite) striking the ground while flying almost horizontally over the surface. Such oblique impacts tend to send ejecta in two directions to the sides of the bolide trajectory, rather than in all directions around the crater. However, there was ice near the surface, covered and protected by the ejecta, and the unprotected ice sublimated at some later time, so the ejecta now appears especially thick.

Also, there were layers of dust (maybe along with ice) deposited inside the crater. Or maybe something else happened, but likely involving the ice that comes and goes in the middle latitude regions of Mars.

Written by: Alfred McEwen (audio: Tre Gibbs)  (27 August 2014)
 
Acquisition date
07 July 2014

Local Mars time
15:50

Latitude (centered)
-36.281°

Longitude (East)
104.554°

Spacecraft altitude
252.8 km (157.1 miles)

Original image scale range
50.6 cm/pixel (with 2 x 2 binning) so objects ~152 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle
2.4°

Phase angle
69.0°

Solar incidence angle
71°, with the Sun about 19° above the horizon

Solar longitude
157.4°, Northern Summer

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  34.4°
JPEG
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

JP2
Black and white
map-projected   (460MB)

IRB color
map-projected   (259MB)

JP2 EXTRAS
Black and white
map-projected  (256MB)
non-map           (298MB)

IRB color
map projected  (122MB)
non-map           (244MB)

Merged IRB
map projected  (422MB)

Merged RGB
map-projected  (430MB)

RGB color
non map           (231MB)
ADDITIONAL INFORMATION
B&W label
Color label
Merged IRB label
Merged RGB label
EDR products
HiView

NB
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

USAGE POLICY
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-Caltech/UArizona

POSTSCRIPT
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.