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Collection:
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NASA Planetary Photo Journal Collection
Collection
NASA Planetary Photo Journal Collection
Collection
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Title:
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Compositional Variations in Callisto's Asgard Impact Structure
Title
Compositional Variations in Callisto's Asgard Impact Structure
Title
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Original Caption Released with Image:
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These frames combine data from two of the instruments aboard NASA's Galileo spacecraft. The left image is from the Solid State Imaging (SSI) system and the right frame shows data from the Near Infrared Mapping Spectrometer (NIMS) overlaid on the SSI data. North is to the top of the images. The area to the northeast (upper right corner) of the NIMS observation shows the southwest part of the ancient impact structure Asgard on Jupiter's moon Callisto. The Asgard multi-ring system has a central bright zone approximately 230 km (140 miles) across, surrounded by concentric rings out to 800 km (480 miles). The rings are fractured parts of the surface with scarps near the central zone and troughs at the outer margin. Impact craters ranging in size down to the limit of resolution are visible throughout the image. The NIMS observation of a small section of the Asgard terrain reveals compositional variations over the surface of Callisto. Red indicates a high concentration of clean ice at the floor of an impact crater while blue shows large amounts of non-ice material on the surrounding surface. The data in these images were taken on November 4, 1996, at a distance of 111,891 kilometers (69,900 miles) by the Solid State Imaging (CCD) system and 17,920 kilometers (11,200 miles) by the Near Infrared Mapping Spectrometer aboard NASA's Galileo spacecraft during its third orbit around Jupiter. The area seen in the SSI image is 440 kilometers by 440 kilometers across at 1.1 kilometers per picture element (pixel) resolution, centered near 17 North, 153 West, while the resolution for the NIMS observation is 8 kilometers per pixel. The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC. This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://www.jpl.nasa…galileo.
Original_Caption_Rel eased_with_Image
These frames combine data from two of the instruments aboard NASA's Galileo spacecraft. The left image is from the Solid State Imaging (SSI) system and the right frame shows data from the Near Infrared Mapping Spectrometer (NIMS) overlaid on the SSI data. North is to the top of the images. The area to the northeast (upper right corner) of the NIMS observation shows the southwest part of the ancient impact structure Asgard on Jupiter's moon Callisto. The Asgard multi-ring system has a central bright zone approximately 230 km (140 miles) across, surrounded by concentric rings out to 800 km (480 miles). The rings are fractured parts of the surface with scarps near the central zone and troughs at the outer margin. Impact craters ranging in size down to the limit of resolution are visible throughout the image. The NIMS observation of a small section of the Asgard terrain reveals compositional variations over the surface of Callisto. Red indicates a high concentration of clean ice at the floor of an impact crater while blue shows large amounts of non-ice material on the surrounding surface. The data in these images were taken on November 4, 1996, at a distance of 111,891 kilometers (69,900 miles) by the Solid State Imaging (CCD) system and 17,920 kilometers (11,200 miles) by the Near Infrared Mapping Spectrometer aboard NASA's Galileo spacecraft during its third orbit around Jupiter. The area seen in the SSI image is 440 kilometers by 440 kilometers across at 1.1 kilometers per picture element (pixel) resolution, centered near 17 North, 153 West, while the resolution for the NIMS observation is 8 kilometers per pixel. The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC. This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://www.jpl.nasa…galileo. Original Caption Released with Image
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Addition Date:
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1997-12-18
Addition_Date
1997-12-18
Addition Date
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Produced By:
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JPL
Produced_By
JPL
Produced By
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Mission:
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Galileo
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Spacecraft:
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Galileo Orbiter
Spacecraft
Galileo Orbiter
Spacecraft
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Target Name:
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Callisto
Target_Name
Callisto
Target Name
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Is a satellite of:
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Jupiter
Is_a_satellite_of
Jupiter
Is a satellite of
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Instrument:
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Solid-State Imaging
Instrument
Solid-State Imaging
Instrument
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Product Size:
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1850 samples x 900 lines
Product_Size
1850 samples x 900 lines
Product Size
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Primary Data Set:
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Galileo EDRs
Primary_Data_Set
Galileo EDRs
Primary Data Set
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Producer ID:
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P48726
MRPS79760
Producer_ID
P48726
MRPS79760
Producer ID
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facet_what:
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Crater
facet_what
Crater
facet_what
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facet_what:
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Moon
facet_what
Moon
facet_what
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facet_what:
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Jupiter
facet_what
Jupiter
facet_what
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facet_what:
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Galileo
facet_what
Galileo
facet_what
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facet_what:
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Galileo Orbiter
facet_what
Galileo Orbiter
facet_what
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facet_what:
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Solid-State Imaging
facet_what
Solid-State Imaging
facet_what
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facet_what:
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Spectrometer
facet_what
Spectrometer
facet_what
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facet_what:
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Callisto
facet_what
Callisto
facet_what
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facet_what:
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Near Infrared Mapping Spectrometer (NIMS)
facet_what
Near Infrared Mapping Spectrometer (NIMS)
facet_what
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facet_where:
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Jet Propulsion Laboratory
facet_where
Jet Propulsion Laboratory
facet_where
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facet_where:
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Jupiter
facet_where
Jupiter
facet_where
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facet_where:
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Callisto
facet_where
Callisto
facet_where
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facet_where:
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Washington
facet_where
Washington
facet_where
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facet_where:
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Jet Propulsion Laboratory (JPL)
facet_where
Jet Propulsion Laboratory (JPL)
facet_where
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facet_when:
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November 4, 1996
facet_when
November 4, 1996
facet_when
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facet_when_year:
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1996
facet_when_year
1996
facet_when_year
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Image #:
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PIA01128
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UID:
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SPD-PHOTJ-PIA01128
UID
SPD-PHOTJ-PIA01128
UID
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orignial url:
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orignial_url
orignial url
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