Two prominent basins, Chekhov at the upper left and Schubert at lower right, are both just under 200 km in diameter but have very different appearances. Chekhov has a prominent peak ring and its older age is reflected in the numerous craters that have battered its rim and floor. Schubert's floor is smooth with only a hint of its peak ring peeking through.
Date acquired: October 31, 2011
Image Mission Elapsed Time (MET): 228589200, 228589220, 228589204
Image ID: 956051, 956056, 956052
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filters: 9, 7, 6 (996, 748, 433 nanometers) in red, green, and blue
Center Latitude: -37.80°
Center Longitude: 303.8° E
Resolution: 655 meters/pixel
Scale: Scene is approximately 700 km (435 miles) across
Incidence Angle: 71.1°
Emission Angle: 15.9°
Phase Angle: 86.8°
Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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