| Date acquired: June 07, 2011 Image Mission Elapsed Time (MET): 215894570 Image ID: 347724 Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS) Center Latitude: 22.5° Center Longitude: 146.1° E Resolution: 28 meters/pixel Scale: The depression is approximately 23 km (14 mi.) across its longest dimension. Incidence Angle: 39.6° Emission Angle: 45.5° Phase Angle: 78.3° Of Interest: This kidney-shaped depression lies along the inner margin of the Caloris basin and was first imaged during MESSENGER's first flyby of the innermost planet. The rimless, non-circular depression is the vent of a small, explosive volcano, similar to other volcanic vents on Mercury. The small number of superposed craters indicates that this feature is relatively young. This image was acquired as a high-resolution targeted observation. Targeted observations are images of a small area on Mercury's surface at resolutions much higher than the 250-meter/pixel (820 feet/pixel) morphology base map or the 1-kilometer/pixel (0.6 miles/pixel) color base map. It is not possible to cover all of Mercury's surface at this high resolution during MESSENGER's one-year mission, but several areas of high scientific interest are generally imaged in this mode each week. | |
| Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington |
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