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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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Phoebe's Radiation
Title
Phoebe's Radiation
Title
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Original Caption Released with Image:
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This image shows thermal radiation from the day and night sides of Saturn's moon Phoebe, taken by the composite infrared spectrometer onboard Cassini 1.8 hours before the spacecraft's closest approach to Phoebe on June 11, 2004. The left-hand panel displays the image in grayscale format, showing the brightness of Phoebe's radiation in the wavelength range 15-17 microns, which is about 25 times the longest wavelength visible to the naked eye. In the middle panel this brightness is used to estimate the surface temperature distribution across Phoebe. Temperatures are given in degrees Kelvin, and vary from a relatively toasty 107 Kelvin (-267 Fahrenheit), in the late morning near the equator (white, lower right), to less than 75 Kelvin (-324 Fahrenheit) in the northern hemisphere in the pre-dawn hours (dark blue, upper left). The "ragged edge" of Phoebe in this region is an instrumental artifact. Temperatures are affected strongly by topography, as can be seen by comparison with the visible-wavelength image (right). Some of the coldest temperatures are found in the shadowed region inside the large depression in the northern hemisphere (upper right). The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The composite infrared spectrometer team is based at NASA's Goddard Space Flight Center, Greenbelt, Md. For more information, about the Cassini-Huygens mission visit, http://saturn.jpl.nasa.gov and the Cassini imaging team home page, http//cirs.gsfc.nasa.gov/.
Original_Caption_Rel eased_with_Image
This image shows thermal radiation from the day and night sides of Saturn's moon Phoebe, taken by the composite infrared spectrometer onboard Cassini 1.8 hours before the spacecraft's closest approach to Phoebe on June 11, 2004. The left-hand panel displays the image in grayscale format, showing the brightness of Phoebe's radiation in the wavelength range 15-17 microns, which is about 25 times the longest wavelength visible to the naked eye. In the middle panel this brightness is used to estimate the surface temperature distribution across Phoebe. Temperatures are given in degrees Kelvin, and vary from a relatively toasty 107 Kelvin (-267 Fahrenheit), in the late morning near the equator (white, lower right), to less than 75 Kelvin (-324 Fahrenheit) in the northern hemisphere in the pre-dawn hours (dark blue, upper left). The "ragged edge" of Phoebe in this region is an instrumental artifact. Temperatures are affected strongly by topography, as can be seen by comparison with the visible-wavelength image (right). Some of the coldest temperatures are found in the shadowed region inside the large depression in the northern hemisphere (upper right). The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the Cassini-Huygens mission for NASA's Office of Space Science, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The composite infrared spectrometer team is based at NASA's Goddard Space Flight Center, Greenbelt, Md. For more information, about the Cassini-Huygens mission visit, http://saturn.jpl.nasa.gov and the Cassini imaging team home page, http//cirs.gsfc.nasa.gov/. Original Caption Released with Image
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Image Credit:
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NASA/JPL/Goddard Space Flight Center
Image_Credit
NASA/JPL/Goddard Space Flight Center
Image Credit
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Produced By:
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Goddard Space Flight Center
Produced_By
Goddard Space Flight Center
Produced By
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Mission:
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Cassini
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Spacecraft:
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Cassini Orbiter
Spacecraft
Cassini Orbiter
Spacecraft
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Target Name:
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Phoebe
Target_Name
Phoebe
Target Name
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Is a satellite of:
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Saturn
Is_a_satellite_of
Saturn
Is a satellite of
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Instrument:
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Composite Infrared Spectrometer
Instrument
Composite Infrared Spectrometer
Instrument
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Product Size:
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720 samples x 540 lines
Product_Size
720 samples x 540 lines
Product Size
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Primary Data Set:
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Cassini
Primary_Data_Set
Cassini
Primary Data Set
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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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Spectrometer
facet_what
Spectrometer
facet_what
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facet_what:
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Saturn
facet_what
Saturn
facet_what
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facet_what:
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Cassini
facet_what
Cassini
facet_what
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facet_what:
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Infrared Spectrometer
facet_what
Infrared Spectrometer
facet_what
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facet_what:
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Dawn
facet_what
Dawn
facet_what
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facet_what:
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Cassini Orbiter
facet_what
Cassini Orbiter
facet_what
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facet_what:
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Huygens Probe
facet_what
Huygens Probe
facet_what
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facet_what:
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Cassini-Huygens
facet_what
Cassini-Huygens
facet_what
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facet_what:
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Composite Infrared Spectrometer
facet_what
Composite Infrared Spectrometer
facet_what
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facet_where:
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Saturn
facet_where
Saturn
facet_where
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facet_where:
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California
facet_where
California
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_where:
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Goddard Space Flight Center (GSFC)
facet_where
Goddard Space Flight Center (GSFC)
facet_where
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facet_where:
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Washington, D.C.
facet_where
Washington, D.C.
facet_where
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facet_when:
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June 11, 2004
facet_when
June 11, 2004
facet_when
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facet_when_year:
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2004
facet_when_year
2004
facet_when_year
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Image #:
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PIA06402
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UID:
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SPD-PHOTJ-PIA06402
UID
SPD-PHOTJ-PIA06402
UID
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orignial url:
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orignial_url
orignial url
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