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| Ultimi arrivi - Mars Reconnaissance Orbiter (MRO) |
PSP_010406_2095_RED_abrowse.jpgArabia Terra (Natural Colors; credits: Lunar Explorer Italia)58 visiteMars Local Time: 15:31 (middle afternoon)
Coord. (centered): 29,3° North Lat. and 14,1° East Long.
Spacecraft altitude: 289,1 Km (such as about 180,7 miles)
Original image scale range: 28,9 cm/pixel (with 1 x 1 binning) so objects ~ 87 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 4,2°
Phase Angle: 54,7°
Solar Incidence Angle: 51° (meaning that the Sun is about 39° above the Local Horizon)
Solar Longitude: 142,1° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 13, 2009
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Deimos-HiRISE-090309.jpgDeimos in Natural Colors and HR (credits: NASA/JPL-Caltech and Univ. of Arizona)81 visiteThese color-enhanced views of Deimos, the smaller of the two moons of Mars, result from imaging on Feb. 21, 2009, by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.
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 Mars' other moon, Phobos. For a comparison, see HiRISE images of Phobos taken on March 23, 2008.
These Deimos images combine HiRISE exposures in Near-InfraRed, Red and Blue-Green wavelengths. In the enhanced color, subtle color variations are visible -- redder in the smoothest areas and less red near the fresh impact craters and over ridges of topographic highs (relative to Deimos' center of gravity). The color variations are probably caused by exposure of surface material 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.
Deimos is about 12 Km (approx. 7,5 miles) in diameter. Its orbital period is 1 day, 6 hours, 17' and 54".
These two images were acquired 5 hours and 35 minutes apart.
The Sun was to the upper left in the first (left) image, and to the right in the second image. The viewing geometry is similar in the two images, but surface features appear very different due to the change in illumination.
With an image scale of about 20 mt (66 feet) per pixel, features 60 mt (197 feet) or larger can be discerned.
These images are products from observations catalogued by the HiRISE team as ESP_012065_9000 and ESP_012068_9000. Other products from these observations are available at http://hirise.lpl.arizona.edu/deimos.php .MareKromiumMar 11, 2009
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ESP_011909_1320_RED_abrowse.jpgSand Dunes and Ripples in Proctor Crater (Natural Colors; credits: Lunar Explorer Italia)74 visiteMars Local Time: 16:00 (middle afternoon)
Coord. (centered): 47,8° South Lat. and 30,7° East Long.
Spacecraft altitude: 253,2 Km (such as about 158,3 miles)
Original image scale range: 50,7 cm/pixel (with 1 x 1 binning) so objects ~ 1,52 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 3,2°
Phase Angle: 59,1°
Solar Incidence Angle: 62° (meaning that the Sun is about 28° above the Local Horizon)
Solar Longitude: 206,7° (Northern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 11, 2009
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ESP_011966_1700_RED_abrowse-00.jpgUplift in Oudemans Crater (Natural Colors; credits: Lunar Explorer Italia)60 visiteMars Local Time: 15:47 (middle afternoon)
Coord. (centered): 9,7° South Lat. and 268,6° East Long.
Spacecraft altitude: 258,7 Km (such as about 161,7 miles)
Original image scale range: 25,9 cm/pixel (with 1 x 1 binning) so objects ~ 78 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 2,4°
Phase Angle: 58,3°
Solar Incidence Angle: 56° (meaning that the Sun is about 34° above the Local Horizon)
Solar Longitude: 209,4° (Northern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 11, 2009
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ESP_011834_1605_RED_abrowse.jpgRecent and small Impact Crater (Natural Colors; credits: Lunar Explorer Italia)60 visiteMars Local Time: 15:52 (middle afternoon)
Coord. (centered): 19,3° South Lat. and 273,8° East Long.
Spacecraft altitude: 254,4 Km (such as about 159,0 miles)
Original image scale range: 25,5 cm/pixel (with 1 x 1 binning) so objects ~ 76 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,2°
Phase Angle: 56,8°
Solar Incidence Angle: 57° (meaning that the Sun is about 33° above the Local Horizon)
Solar Longitude: 203,2° (Northern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 11, 2009
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ESP_011386_2065_RED_abrowse.jpgCollapse Pit in Tractus Fossae (Enhanced and Darkened Natural Colors; credits for the additional process. and color.: Dr Paolo C. Fienga - Lunar Explorer Italia)59 visiteMars Local Time: 15:46 (middle afternoon)
Coord. (centered): 26,1° North Lat. and 259,4° East Long.
Spacecraft altitude: 281,9 Km (such as about 176,2 miles)
Original image scale range: 28,2 cm/pixel (with 1 x 1 binning) so objects ~ 85 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 6,7°
Phase Angle: 54,4°
Solar Incidence Angle: 61° (meaning that the Sun is about 29° above the Local Horizon)
Solar Longitude: 182,8° (Northern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 11, 2009
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Esp_012065_9000_color.jpgDeimos (possible True Colors; credits: Lunar Explorer Italia)60 visitenessun commentoMareKromiumMar 11, 2009
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PSP_010420_2505_RED_abrowse.jpgSummer Ice in Vastitas Borealis (Natural Colors; credits: Lunar Explorer Italia)58 visiteMars Local Time: 15:02 (early afternoon)
Coord. (centered): 70,3° North Lat. and 341,4° East Long.
Spacecraft altitude: 317,0 Km (such as about 198,1 miles)
Original image scale range: 31,7 cm/pixel (with 1 x 1 binning) so objects ~ 95 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 7,3°
Phase Angle: 68,5°
Solar Incidence Angle: 62° (meaning that the Sun is about 28° above the Local Horizon)
Solar Longitude: 142,7° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 10, 2009
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PSP_010429_1660_RED_abrowse.jpgUnnamed Southern Crater (Natural Colors; credits: Lunar Explorer Italia)56 visiteMars Local Time: 15:48 (middle afternoon)
Coord. (centered): 13,8° South Lat. and 113,5° East Long.
Spacecraft altitude: 276,4 Km (such as about 172,7 miles)
Original image scale range: 27,6 cm/pixel (with 1 x 1 binning) so objects ~ 83 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 20,7°
Phase Angle: 46,6°
Solar Incidence Angle: 63° (meaning that the Sun is about 27° above the Local Horizon)
Solar Longitude: 143,0° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 10, 2009
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PSP_010446_2675_RED_abrowse.jpgNorth Polar Residual Cap Monitoring (Natural Colors; credits: Lunar Explorer Italia)90 visiteMars Local Time: 09:54 (middle morning)
Coord. (centered): 87,4° North Lat. and 273,0° East Long.
Spacecraft altitude: 316,8 Km (such as about 198,0 miles)
Original image scale range: 63,4 cm/pixel (with 1 x 1 binning) so objects ~ 1,90 mt across are resolved
Map projected scale: 50 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,0°
Phase Angle: 73,2°
Solar Incidence Angle: 73° (meaning that the Sun is about 17° above the Local Horizon)
Solar Longitude: 143,7° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 10, 2009
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PSP_010432_2380_RED_abrowse.jpgCentral Peak of an Unnamed Crater of Vastitas Borealis (Natural Colors; credits: Lunar Explorer Italia)58 visiteMars Local Time: 15:22 (early afternoon)
Coord. (centered): 57,9° North Lat. and 19,8° East Long.
Spacecraft altitude: 310,5 Km (such as about 194,0 miles)
Original image scale range: 31,1 cm/pixel (with 1 x 1 binning) so objects ~ 963 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 0,7°
Phase Angle: 56,7°
Solar Incidence Angle: 57° (meaning that the Sun is about 33° above the Local Horizon)
Solar Longitude: 143,1° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 10, 2009
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PSP_010400_2265_RED_abrowse.jpgExtremely Fresh and Small Crater Cluster (Natural Colors; credits: Lunar Explorer Italia)59 visiteMars Local Time: 15:32 (middle afternoon)
Coord. (centered): 46,3° North Lat. and 176,9° East Long.
Spacecraft altitude: 307,4 Km (such as about 199,1 miles)
Original image scale range: 30,8 cm/pixel (with 1 x 1 binning) so objects ~ 92 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 10,2°
Phase Angle: 44,0°
Solar Incidence Angle: 54° (meaning that the Sun is about 36° above the Local Horizon)
Solar Longitude: 141,9° (Northern Summer)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer ItaliaMareKromiumMar 10, 2009
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