Wednesday, January 16, 2013

Cloverleaf Craters



This very high resolution image features three impact craters of nearly the same size that overlap to form a cloverleaf pattern. All three have rounded rims, indicating that they are relatively old. Determining the sequence of events is difficult. It may be that the one at the bottom formed most recently, blasting away sections of the rims of the other two.

Date acquired: February 26, 2012
Image Mission Elapsed Time (MET): 238781474
Image ID: 1445431
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 48.76°
Center Longitude: 298.0° E
Resolution: 13 meters/pixel
Scale: The scene is about 14 km (9 mi.) across.
Incidence Angle: 71.7°
Emission Angle: 0.1°
Phase Angle: 71.7°

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

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