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X Marks the Spot
Click on image to enlarge.
X Marks the Spot
Release Date: April 28, 2011
Topics: Crater Chains, NAC



Date acquired: April 24, 2011
Image Mission Elapsed Time (MET): 212153114
Image ID: 171577
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 2.22
Center Longitude: 216.0 E
Resolution: 233 meters/pixel
Scale: This image is 116.5 km across.
Incidence Angle: 69.7
Emission Angle: 7.3
Phase Angle: 62.4

Of Interest: This image of an as-yet-unnamed crater was taken using the Mercury Dual Imaging System (MDIS) pivot and Narrow Angle Camera (NAC). The perpendicular lines that traverse the crater are secondary crater chains caused by ejecta from two primary impacts outside of the field of view.

This image was acquired as part of MDIS's high-resolution surface morphology base map. The surface morphology base map will cover more than 90% of Mercury's surface with an average resolution of 250 meters/pixel (0.16 miles/pixel or 820 feet/pixel). Images acquired for the surface morphology base map typically have off-vertical Sun angles (i.e., high incidence angles) and visible shadows so as to reveal clearly the topographic form of geologic features.

The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation are unraveling the history and evolution of the Solar System's innermost planet. Visit the Why Mercury? section of this website to learn more about the key science questions that the MESSENGER mission is addressing. During the one-year primary mission, MDIS is scheduled to acquire more than 75,000 images in support of MESSENGER's science goals.

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


For information regarding the use of MESSENGER images, see the image use policy.


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