Thursday, May 2, 2013

Degraded Impact Crater Rim


The rim of an unnamed peak-ring basin cuts across today's featured image. The basin is relatively degraded, but its rim still stands as a cliff over 1 km (0.6 miles) high. The face of this cliff, where downslope is toward the top of the image, is covered by a chain of secondary craters, whose formation on this steep slope led to somewhat asymmetrical crater shapes. It's hard to say which crater these secondaries originated from - the region is crossed by rays from Bronte, over 1700 km to the west, and Hokusai, over 2000 km to the east.

Date acquired: April 12, 2013
Image Mission Elapsed Time (MET): 8108630
Image ID: 3870271
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 41.15°
Center Longitude: 289.3° E
Resolution: 22 meters/pixel
Scale: This scene is approximately 25 km (16 miles) across
Incidence Angle: 64.0°
Emission Angle: 15.0°
Phase Angle: 79.0°

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

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