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Well Donne
473 of 1081

Well Donne

May 10, 2012
Date acquired: August 02, 2011 Image Mission Elapsed Time (MET): 220803786 Image ID: 583200 Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS) Center Latitude: 3.32° Center Longitude: 346.0° E Resolution: 108 meters/pixel Scale: Donne crater is about 86 km (53 mi.) in diameter. Incidence Angle: 78.9° Emission Angle: 32.4° Phase Angle: 111.3° Of Interest: This image from the Narrow Angle Camera provides a fine view of the crater Donne. John Donne was an English poet known especially for his sonnets and elegies. Donne crater displays a mound-like central peak that has been somewhat rounded by impact erosion, and well-developed wall terraces. The crater has been modified by lobate scarps that cut the walls and floor. This image was acquired as part of MDIS's high-resolution surface morphology base map. The surface morphology base map covers more than 99% of Mercury's surface with an average resolution of 200 meters/pixel. Images acquired for the surface morphology base map typically are obtained at off-vertical Sun angles (i.e., high incidence angles) and have visible shadows so as to reveal clearly the topographic form of geologic features. The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation are unraveling the history and evolution of the Solar System's innermost planet. Visit the Why Mercury? section of this website to learn more about the key science questions that the MESSENGER mission is addressing. During the one-year primary mission, MESSENGER acquired 88,746 images and extensive other data sets. MESSENGER is now in a yearlong extended mission, during which plans call for the acquisition of more than 80,000 additional images to support MESSENGER's science goals. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington