Occator (krater)
Occator är en nedslagskrater på dvärgplaneten Ceres som innefattar "Fläck 5", den ljusstarkaste av de ljusa fläckarna på Ceres som observerats av rymdsonden Dawn. Den var tidigare känd som "Region A" i bilder tagna från jorden av Keck-observatoriet på Mauna Kea.[1]
Kratern har fått namnet efter Occator, den romerska guden för harvning som var Ceres medhjälpare.[2][3]
Referenser
- Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, Occator (crater), 10 september 2015.
- ^ Kuppers et. al. (22 januari 2014). ”PIA17831: Water Detection on Ceres”. NASA. http://photojournal.jpl.nasa.gov/catalog/PIA17831. Läst 3 september 2017.
- ^ ”Planetary Names: Crater, craters: Occator on Ceres”. USGS. 6 juli 2015. http://planetarynames.wr.usgs.gov/Feature/15341. Läst 3 september 2017.
- ^ ”USGS: Ceres nomenclature”. USGS. 13 juli 2015. http://planetarynames.wr.usgs.gov/images/ceres.pdf. Läst 3 september 2017.
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Media som används på denna webbplats
PIA19547: Ceres RC3 Animation - Still Frame 25
http://photojournal.jpl.nasa.gov/catalog/PIA19547
http://www.jpl.nasa.gov/news/news.php?feature=4582
UPLOADER NOTE: Frame 25 of the original GIF animation (16.096KB) - via JASC Animation Shop v 2.02.
In this closest-yet view of Ceres, the brightest spots within a crater in the northern hemisphere are revealed to be composed of many smaller spots. This frame is from an animation of sequences taken by NASA's Dawn spacecraft on May 4, 2015.
This animation shows a sequence of images taken by NASA's Dawn spacecraft on May 4, 2015, from a distance of 8,400 miles (13,600 kilometers), in its RC3 mapping orbit. The image resolution is 0.8 mile (1.3 kilometers) per pixel.
In this closest-yet view, the brightest spots within a crater in the northern hemisphere are revealed to be composed of many smaller spots. However, their exact nature remains unknown.
Dawn's mission is managed by JPL for NASA's Science Mission Directorate in Washington. Dawn is a project of the directorate's Discovery Program, managed by NASA's Marshall Space Flight Center in Huntsville, Alabama. UCLA is responsible for overall Dawn mission science. Orbital ATK, Inc., in Dulles, Virginia, designed and built the spacecraft. The German Aerospace Center, the Max Planck Institute for Solar System Research, the Italian Space Agency and the Italian National Astrophysical Institute are international partners on the mission team. For a complete list of acknowledgements, visit http://dawn.jpl.nasa.gov/mission.
For more information about the Dawn mission, visit http://dawn.jpl.nasa.gov.
A cluster of mysterious bright spots on dwarf planet Ceres can be seen in this image, taken by NASA's Dawn spacecraft from an altitude of 2,700 miles (4,400 kilometers). The image, with a resolution of 1,400 feet (410 meters) per pixel, was taken on June 9, 2015.
Occator crater, measuring 57 miles (92 kilometers) across and 2.5 miles (4 kilometers) deep, contains the brightest area on Ceres. This region has been the subject of intense interest since Dawn's approach to the dwarf planet in early 2015.
Dawn's close-up view reveals a dome in a smooth-walled pit in the bright center of the crater. Numerous linear features and fractures crisscross the top and flanks of this dome. Prominent fractures also surround the dome and run through smaller, bright regions found within the crater.
A separate figure shows the bright spots in a mosaic of two Dawn images taken using a shorter exposure time. The shorter exposure reveals details within the bright features that are overexposed, or nearly so, in the full mosaic.
The images used to make these mosaics were taken from Dawn's low-altitude mapping orbit (LAMO), 240 miles (385 kilometers) above Ceres.
Dawn's mission is managed by JPL for NASA's Science Mission Directorate in Washington. Dawn is a project of the directorate's Discovery Program, managed by NASA's Marshall Space Flight Center in Huntsville, Alabama. UCLA is responsible for overall Dawn mission science. Orbital ATK, Inc., in Dulles, Virginia, designed and built the spacecraft. The German Aerospace Center, the Max Planck Institute for Solar System Research, the Italian Space Agency and the Italian National Astrophysical Institute are international partners on the mission team. For a complete list of acknowledgments, see http://dawn.jpl.nasa.gov/mission.
For more information about the Dawn mission, visit http://dawn.jpl.nasa.gov.
The original NASA image has been cropped and converted from TIFF to JPEG format by the uploader.