Catalog Page for PIA19290

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PIA19290: Tangential Craters within Ptolemaeus Crater

This image from NASA's Mars Reconnaissance Orbiter shows two small craters (called 'tangential craters'), just touching on their rims, in the much larger Ptolmaeus Crater, which is located in the Martian Southern hemisphere.

Target Name:	Mars
Is a satellite of:	Sol (our sun)
Mission:	Mars Reconnaissance Orbiter (MRO)
Spacecraft:	Mars Reconnaissance Orbiter (MRO)
Instrument:	HiRISE
Product Size:	2880 x 1800 pixels (w x h)
Produced By:	University of Arizona/HiRISE-LPL
Other Information:	Other products from image ESP_020065_1335
Full-Res TIFF:	PIA19290.tif (5.191 MB)
Full-Res JPEG:	PIA19290.jpg (798.2 kB)

Click on the image above to download a moderately sized image in JPEG format (possibly reduced in size from original)

Original Caption Released with Image:

Map Projected Browse Image
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This image shows two small craters, just touching on their rims, in the much larger Ptolmaeus Crater, which is located in the Martian Southern hemisphere. These craters are called "tangential craters."

The more degraded and filled-in crater is approximately 3 kilometers in diameter, and there is an unusual feature near the center. A closeup shows the feature is approximately 76 meters wide and 164 meters long. This feature is also possibly a substantially oblique impact crater, but its origin remains unknown.

The University of Arizona, Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington.

Image Credit:

NASA/JPL-Caltech/University of Arizona

Image Addition Date:

2015-02-04