File:Deimos names.png
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[edit]DescriptionDeimos names.png |
Română: ESP_012068_9000 - 2nd Observation (21 February 2009)
http://hirise.lpl.arizona.edu/deimos.php HiRISE captured these enhanced-color images of Deimos, the smaller of the two moons of Mars, on 21 February 2009. Deimos has a smooth surface due to a blanket of fragmental rock or regolith, except for the most recent impact craters. It is a dark, reddish object, very similar to Phobos, shown here in enhanced HiRISE colors (near-infrared, red, and blue-green). HiRISE took images of Phobos on 23 March 2008. There are subtle color variations—redder in the smoothest areas and less red near fresh impact craters and over ridges or topographic highs (relative to its center of gravity). These color variations are probably caused by the exposure of surface materials to the space environment, which leads to darkening and reddening. Brighter and less-red surface materials have seen less exposure to space due to recent impacts or downslope movement of regolith. With an image scale of about 20 meters/pixel, features 60 m or larger can be discerned. The images were acquired 5 hrs 35 minutes apart, so the sun was to the upper left in the first (left) image and to the right in the second image. Although the viewing geometry is similar in the two images, surface features appear very different due to the changes in illumination. EDR Products EDR Products for ESP_012068_9000 - 2nd Observation (21 February 2009) EDR Products for ESP_012065_9000 - 1st Observation (21 February 2009) Written by: Alfred McEwen (9 March 2009) NOTE - Also See the following website references for the location of "Swift crater" and "Voltaire crater" on the surface of Deimos (the smaller of two moons of planet Mars). http://planetary.org/blogs/emily-lakdawalla/2009/1868.html http://elsofista.blogspot.com/2009/03/deimos-la-pequena-luna-marciana.html NOTE - Converted Original TIF Image to JPG (via MS Paint v5.1) and Rotated 180 degrees clockwise (via ACDSee Photo Manager 2009) - and uploaded to Wikimedia Commons. |
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Source | http://hirise.lpl.arizona.edu/images/2009/deimos/ESP_012068_9000_COLOR5.tif |
Author | ASA/JPL/University of Arizona |
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[edit]Public domainPublic domainfalsefalse |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ![]() |
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