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Rock Lobster
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Rock Lobster
Release Date: May 23, 2011
Topics: Impact Melt,

Date acquired: April 27, 2011
Image Mission Elapsed Time (MET): 212414120
Image ID: 183875
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 5.27°
Center Longitude: 202.2° E
Resolution: 214 meters/pixel
Scale:The scene is about 109 km (68 mi.) across.
Incidence Angle: 73.3°
Emission Angle: 0.7°
Phase Angle: 72.7°

Of Interest:The central peak of this 34-km diameter crater vaguely resembles a lobster's claw. South is to the top in this presentation. The very smooth parts of the floor may be ponded impact melt. King crater on the Moon also has a famous lobster-claw central peak.

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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