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Filling the Gap
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Caption:
One of MDIS's new campaigns during the extended mission is to obtain images of Mercury's north polar region. During MESSENGER's primary mission, Mercury's south polar region was repeatedly imaged and areas of permanent shadow were identified . During MESSENGER's extended mission, MDIS will make a dedicated effort to repeatedly image the surface near Mercury's north pole. MESSENGER's highly eccentric orbit, which passes close to Mercury's surface at high northern latitudes, provides an opportunity for particularly high-resolution images of Mercury's north polar region. This image helps to fill the small gap in coverage near the north pole that remained after the prime mission.
Date acquired:
April 24, 2012
Image Mission Elapsed Time (MET):
243796223
Image ID:
1703489
Instrument:
Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter:
7 (748 nanometers)
Center Latitude:
86.55°
Center Longitude:
220.2° E
Resolution:
59 meters/pixel
Scale:
This image is approximately 60 km (37 miles) across
Incidence Angle:
86.7°
Emission Angle:
24.9°
Phase Angle:
61.7°
Background Info:
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 acquired 88,746 images and extensive other data sets. MESSENGER is now in a year-long extended mission, during which plans call for the acquisition of more than 80,000 additional images to support MESSENGER's science goals.
These images are from MESSENGER, a NASA Discovery mission to conduct the first orbital study of the innermost planet, Mercury. For information regarding the use of images, see the MESSENGER image use policy .
Cataloging Keywords:
| Name | Value | Additional Values |
|---|---|---|
| Target | Mercury | |
| System | ||
| Target Type | Planet | |
| Mission | MESSENGER | |
| Instrument Host | MESSENGER | |
| Host Type | Orbiter | |
| Instrument | Mercury Dual Imaging System (MDIS) | |
| Detector | Wide Angle Camera (WAC) | |
| Extra Keywords | Grayscale, Radio, Shadow | |
| Acquisition Date | ||
| Release Date | 2012-05-10 | |
| Date in Caption | 2012-04-24 | |
| Image Credit | NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington | |
| Source | photojournal.jpl.nasa.gov/catalog/PIA15759 | |
| Identifier | PIA15759 | |
