Saturday, August 6, 2011

Matryoshka Dolls


The largest crater in this image is superimposed by three different craters that each have central peaks. The largest of these superimposed craters is overlapped by one of the others, creating a small crater partially inside another which in turn has another smaller crater partially inside it. Much of Mercury's surface is heavily cratered so overlapping craters can be seen in many places, including the areas around Camoes crater seen here.

Date acquired: July 13, 2011
Image Mission Elapsed Time (MET): 219038585
Image ID: 499240
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: -53.88°
Center Longitude: 83.80° E
Resolution: 361 meters/pixel
Scale: The largest crater in this image is approximately 105 km (65.24 mi) wide
Incidence Angle: 67.1°
Emission Angle: 2.0°
Phase Angle: 68.9°

Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

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