Elliptical Impact Crater
NASA/JPL/University of Arizona
Elliptical Impact Crater
ESP_020793_1935  Science Theme: Impact Processes
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HIFLYER

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This image shows what appears to be a highly elliptical crater, which would be unusual.

Closer examination reveals that it is probably two overlapping craters that formed concurrently, plus several smaller craters aligned with the long axis of the elliptical depression.

This type of crater chain can form from a highly oblique impact, in which the bolide trajectory is almost parallel to the surface.

Written by: Alfred McEwen  (26 January 2011)
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Acquisition date
02 January 2011

Local Mars time:
15:33

Latitude (centered)
13.171°

Longitude (East)
118.437°

Range to target site
279.5 km (174.7 miles)

Original image scale range
55.9 cm/pixel (with 2 x 2 binning) so objects ~168 cm across are resolved

Map projected scale
50 cm/pixel and North is up

Map projection
Equirectangular

Emission angle:
0.7°

Phase angle:
59.4°

Solar incidence angle
59°, with the Sun about 31° above the horizon

Solar longitude
209.9°, Northern Autumn

For non-map projected images
North azimuth:  97°
Sub-solar azimuth:  342.6°
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   (254MB)

IRB color
map-projected   (120MB)

JP2 EXTRAS
Black and white
map-projected  (107MB)
non-map           (144MB)

IRB color
map projected  (40MB)
non-map           (126MB)

Merged IRB
map projected  (264MB)

Merged RGB
map-projected  (240MB)

RGB color
non map           (117MB)
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/University of Arizona

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.