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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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Antum Crater
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Original Caption Released with Image:
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This image shows the location of one of the highest spatial resolution NIMS images acquired. The left image is an airbrush map of the surface of Ganymede from Voyager data. The small square shows the location of Antum crater, target of the high-resolution NIMS image on the right. NIMS spatial resolution is approximately 4 km/pixel and the image is a falsely colored albedo for a single wavelength near 0.8 micrometers.
Antum is what is known as a dark ray crater, that is, dark lines emanate from the central bright area. This NIMS image is a close-up of the central area and the dark rays are off the edges of the image. Dark ray craters are fairly unusual and are concentrated in one area of Ganymede's surface. They are thought to be composed of material from the body that impacted Ganymede and created the crater, rather than material brought up from the subsurface. Analysis of the NIMS data will yield compositional and mineralogical information on the dark material. This can help us to understand the nature of bodies that "crash" into the Jupiter system, as did Comet Shoemaker-Levy 9 in 1995, as well as give more information on the history of surface modification on Ganymede.
The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.
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://galileo.jpl.n asa.gov.
Original_Caption_Rel eased_with_Image
This image shows the location of one of the highest spatial resolution NIMS images acquired. The left image is an airbrush map of the surface of Ganymede from Voyager data. The small square shows the location of Antum crater, target of the high-resolution NIMS image on the right. NIMS spatial resolution is approximately 4 km/pixel and the image is a falsely colored albedo for a single wavelength near 0.8 micrometers.
Antum is what is known as a dark ray crater, that is, dark lines emanate from the central bright area. This NIMS image is a close-up of the central area and the dark rays are off the edges of the image. Dark ray craters are fairly unusual and are concentrated in one area of Ganymede's surface. They are thought to be composed of material from the body that impacted Ganymede and created the crater, rather than material brought up from the subsurface. Analysis of the NIMS data will yield compositional and mineralogical information on the dark material. This can help us to understand the nature of bodies that "crash" into the Jupiter system, as did Comet Shoemaker-Levy 9 in 1995, as well as give more information on the history of surface modification on Ganymede.
The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA's Office of Space Science, Washington, DC.
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://galileo.jpl.n asa.gov.
Original Caption Released with Image
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Addition Date:
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1998-03-26
Addition_Date
1998-03-26
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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Ganymede
Target_Name
Ganymede
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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Near Infrared Mapping Spectrometer
Instrument
Near Infrared Mapping Spectrometer
Instrument
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Product Size:
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1588 samples x 762 lines
Product_Size
1588 samples x 762 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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P48727
MRPS79472
Producer_ID
P48727
MRPS79472
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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Jupiter
facet_what
Jupiter
facet_what
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facet_what:
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Voyager
facet_what
Voyager
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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Spectrometer
facet_what
Spectrometer
facet_what
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facet_what:
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Ganymede
facet_what
Ganymede
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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Washington
facet_where
Washington
facet_where
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facet_where:
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Ganymede
facet_where
Ganymede
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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1995
facet_when
1995
facet_when
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facet_when_year:
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1995
facet_when_year
1995
facet_when_year
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Image #:
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PIA00854
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UID:
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SPD-PHOTJ-PIA00854
UID
SPD-PHOTJ-PIA00854
UID
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orignial url:
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orignial_url
orignial url
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