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Tangential Craters within Ptolemaeus Crater
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Caption:
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.
Background Info:
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.
Cataloging Keywords:
| Name | Value | Additional Values |
|---|---|---|
| Target | Mars | |
| System | ||
| Target Type | Planet | |
| Mission | Mars Reconnaissance Orbiter (MRO) | |
| Instrument Host | Mars Reconnaissance Orbiter | |
| Host Type | Orbiter | |
| Instrument | High Resolution Imaging Science Experiment (HiRISE) | |
| Detector | ||
| Extra Keywords | Crater, Grayscale, Impact, Map | |
| Acquisition Date | ||
| Release Date | 2015-02-04 | |
| Date in Caption | ||
| Image Credit | NASA/JPL-Caltech/University of Arizona | |
| Source | photojournal.jpl.nasa.gov/catalog/PIA19290 | |
| Identifier | PIA19290 | |
