Aksakov Askew
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Aksakov Askew

March 26, 2013
Release Date: March 22, 2013 Topics: Hollows, NAC, Named Craters, Smooth Terrain Date acquired: February 12, 2013 Image Mission Elapsed Time (MET): 2952642 Image ID: 3503669 Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS) Center Latitude: 34.8° Center Longitude: 280.9° E Resolution: 37 meters/pixel Scale: The crater in this image is approximately 40 km (25 mi.) from top to bottom Incidence Angle: 80.8° Emission Angle: 52.5° Phase Angle: 28.3° (North is down in this image.) Of Interest: The 173-km-diameter Aksakov basin was named in 2012, and has a prominent peak ring that hosts multiple hollows. A large portion of its peak ring is missing, however, destroyed when the crater in this image was formed. But this crater has interesting features of its own, including wall slumps and hollows on its smooth floor. This image was acquired as a high-resolution targeted observation. Targeted observations are images of a small area on Mercury's surface at resolutions much higher than the 200-meter/pixel morphology base map. It is not possible to cover all of Mercury's surface at this high resolution, but typically several areas of high scientific interest are imaged in this mode each week. 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. During the first two years of orbital operations, MESSENGER acquired over 150,000 images and extensive other data sets. MESSENGER is capable of continuing orbital operations until early 2015. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

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