This view shows several groups of similar-sized craters arranged roughly in lines. Crater chains are sometimes formed by volcanic eruptions, but the craters here were made by secondary impacts. The excavation of a large crater or basin can throw out blocks of material along radial trajectories. The blocks then sometimes strike the surface nearly in the same location, producing secondary crater chains. Finer ejecta may form the bright ribbons known as crater rays.
Date acquired: June 07, 2011
Image Mission Elapsed Time (MET): 215937760
Image ID: 349758
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 7 (748 nanometers)
Center Latitude: 35.48°
Center Longitude: 123.4° E
Resolution: 236 meters/pixel
Scale: The edges of the image are about 120 km (75 mi.) long.
Incidence Angle: 63.0°
Emission Angle: 11.7°
Phase Angle: 51.3°
Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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