PIA17451: Frozen Fire
 Target Name:  Mercury
 Is a satellite of:  Sol (our sun)
 Mission:  MESSENGER
 Spacecraft:  MESSENGER
 Instrument:  MDIS - Wide Angle
 Product Size:  1442 x 1644 pixels (w x h)
 Produced By:  Johns Hopkins University/APL
 Full-Res TIFF:  PIA17451.tif (7.115 MB)
 Full-Res JPEG:  PIA17451.jpg (153.7 kB)

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Original Caption Released with Image:

Today's image shows an unnamed impact crater northwest of Stravinsky. The floor contains an irregular depression (vent) that was likely the site of an explosive volcanic eruption. One such form of eruption is known as a "fire fountain". The subtle yellow-orange cast that surrounds the volcanic depression is the once-molten, but now solidified, pyroclastic material that was deposited during the eruption.

This image was acquired as part of MDIS's high-resolution 3-color imaging campaign. The map produced from this campaign complements the 8-color base map (at an average resolution of 1 km/pixel) acquired during MESSENGER's primary mission by imaging Mercury's surface in a subset of the color filters at the highest resolution possible. The three narrow-band color filters are centered at wavelengths of 430 nm, 750 nm, and 1000 nm, and image resolutions generally range from 100 to 400 meters/pixel in the northern hemisphere.

Date acquired: October 21, 2012
Image Mission Elapsed Time (MET): 259322083, 259322075, 259322079
Image ID: 2807348, 2807346, 2807347
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: 53.62
Center Longitude: 275.2 E
Resolution: 100 meters/pixel
Scale: The impact crater hosting the volcanic vent is about 24 km (15 mi.) in diameter.
Incidence Angle: 67.2
Emission Angle: 0.2
Phase Angle: 67.4

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. MESSENGER acquired over 150,000 images and extensive other data sets. MESSENGER is capable of continuing orbital operations until early 2015.

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

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

Image Addition Date: