The Case of the Missing Crater Rim
NASA/JPL/University of Arizona
The Case of the Missing Crater Rim
ESP_050746_1775  Science Theme: Fluvial Processes


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Perched at the edge of an outflow channel, these two craters appear to have lost a portion of their crater rims during a flood event.

Alternatively, it is also possible that the craters impacted the edge of the outflow channel after the flood occurred and we are seeing the difference in the strength of the material impacted.

Written by: Candy Hansen (audio: Tre Gibbs)  (21 August 2017)
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Acquisition date
24 May 2017

Local Mars time:
14:18

Latitude (centered)
-2.614°

Longitude (East)
299.454°

Range to target site
266.9 km (166.8 miles)

Original image scale range
53.4 cm/pixel (with 2 x 2 binning) so objects ~160 cm across are resolved

Map projected scale
50 cm/pixel and North is up

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Equirectangular

Emission angle:
1.7°

Phase angle:
33.5°

Solar incidence angle
35°, with the Sun about 55° above the horizon

Solar longitude
9.4°, Northern Spring

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North azimuth:  97°
Sub-solar azimuth:  17.0°
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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.