Astronomy Picture of the Day
February 19, 2015

Unnamed Peak Crater in Terra Sirenum
Unnamed Peak Crater in Terra Sirenum

Credits: NASA/JPL/Arizona State University (ASU) - Credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/IPF

In this VIS image, taken by the NASA - Mars Odyssey Orbiter on January, 7th, 2015, and during its 57.962nd orbit around the Red Planet, we can see a nice example of an Unnamed Crater with a perfectly defined Central Peak; this still Unnamed Crater is located on the Floor of the very large Newton Crater (approx. 300 Km - such as about 186,3 miles - in diameter) in the Martian Region known as Terra Sirenum.

The remnants of (what could have been, in a far, distant past) a Pedestal, are still very well visible, on its South-Western Outer Rim (lower and lower-left - Sx - side of the frame); furthermore, a large portion of the Inner Rim, as far as we can see here (since only a little more of one half of the Crater has been photographed by the NASA - Mars Odyssey Orbiter), appears to be characterized by the presence of extremely fresh (---> sharp and deep) Gullies. Last, but not least, faint traces of an ancient Landslide can be seen at about 9 o'clock of the Crater, and the Central Peak itself shows two small Depressions - on its Western (and shadowed) Side, which could be the evidence of two small Impact Events.

Latitude (centered): 42,1211° South
Longitude (centered): 201,8140° East
Instrument: VIS

This image (which is an Original Mars Odyssey Orbiter b/w and Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19200) has been additionally processed, magnified to aid the visibility of the details, contrast enhanced and sharpened, Gamma corrected and then colorized in Absolute Natural Colors (such as the colors that a normal human eye would actually perceive if someone were onboard the NASA - Mars Odyssey Orbiter and then looked down, towards the Surface of Mars), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.

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