This image taken by MDIS's Wide Angle Camera is dominated by an unnamed basin formed from a large impact on the surface of Mercury. Although the impact was energetic enough to create a central peak ring in the basin, the ring has been mostly flooded by impact melt and/or volcanic plains. To the MESSENGER summer interns, the partial ring of mountains resembles a smile.
Date acquired: July 16, 2011
Image Mission Elapsed Time (MET): 219266241
Image ID: 509587
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 7 (748 nanometers)
Center Latitude: 51.79°
Center Longitude: 82.82° E
Resolution: 203 meters/pixel
Scale: The basin is approximately 180 km (112 mi) in diameter
Incidence Angle: 62.3°
Emission Angle: 0.2°
Phase Angle: 62.5°
Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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