Collection:
NASA Planetary Photo Journal Collection Collection NASA Planetary Photo Journal Collection Collection
Title:
Phoebe Temperature Maps Title Phoebe Temperature Maps Title
Original Caption Released with Image:
A montage of maps of Saturn's moon Phoebe shows surface temperatures at various times of day as determined by the composite infrared spectrometer onboard Cassini during the June 11, 2004, Phoebe flyby. The asterisk on each map shows the location of the subsolar point, where the Sun is directly overhead. This point moves across the surface as Phoebe rotates. It is morning in regions to the left of the subsolar point, and afternoon in regions to the right. Like a newspaper weather map, different colors indicate different temperatures, though Phoebe's temperatures are distinctly cooler than even the coldest January day on Earth. Equatorial temperatures peak in the early afternoon near 112 Kelvin (-257 Fahrenheit), plunging to 78 Kelvin (-319 Fahrenheit) before dawn, and are even colder at higher latitudes. The large day/night temperature contrasts imply that Phoebe's surface is covered in loose dust or ice particles that store little heat and thus cool off rapidly at night. Regions of Phoebe's surface that were not observed are shown in black. Most of the maps show the effect on surface temperatures of the large crater-like depression seen in Cassini's visible-wavelength images of Phoebe, which is located just left of center in these maps. Crater walls that are shadowed and cold in the early morning in the first map are sunlit and warm in the late afternoon in the final map. 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 was 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 A montage of maps of Saturn's moon Phoebe shows surface temperatures at various times of day as determined by the composite infrared spectrometer onboard Cassini during the June 11, 2004, Phoebe flyby. The asterisk on each map shows the location of the subsolar point, where the Sun is directly overhead. This point moves across the surface as Phoebe rotates. It is morning in regions to the left of the subsolar point, and afternoon in regions to the right. Like a newspaper weather map, different colors indicate different temperatures, though Phoebe's temperatures are distinctly cooler than even the coldest January day on Earth. Equatorial temperatures peak in the early afternoon near 112 Kelvin (-257 Fahrenheit), plunging to 78 Kelvin (-319 Fahrenheit) before dawn, and are even colder at higher latitudes. The large day/night temperature contrasts imply that Phoebe's surface is covered in loose dust or ice particles that store little heat and thus cool off rapidly at night. Regions of Phoebe's surface that were not observed are shown in black. Most of the maps show the effect on surface temperatures of the large crater-like depression seen in Cassini's visible-wavelength images of Phoebe, which is located just left of center in these maps. Crater walls that are shadowed and cold in the early morning in the first map are sunlit and warm in the late afternoon in the final map. 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 was 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
Image Credit:
NASA/JPL/Goddard Space Flight Center Image_Credit NASA/JPL/Goddard Space Flight Center Image Credit
Produced By:
Goddard Space Flight Center Produced_By Goddard Space Flight Center Produced By
Mission:
Cassini Mission Cassini Mission
Spacecraft:
Cassini Orbiter Spacecraft Cassini Orbiter Spacecraft
Target Name:
Phoebe Target_Name Phoebe Target Name
Is a satellite of:
Saturn Is_a_satellite_of Saturn Is a satellite of
Instrument:
Composite Infrared Spectrometer Instrument Composite Infrared Spectrometer Instrument
Product Size:
720 samples x 540 lines Product_Size 720 samples x 540 lines Product Size
Primary Data Set:
Cassini Primary_Data_Set Cassini Primary Data Set
facet_what:
Sun facet_what Sun facet_what
facet_what:
Crater facet_what Crater facet_what
facet_what:
Moon facet_what Moon facet_what
facet_what:
Earth facet_what Earth facet_what
facet_what:
Spectrometer facet_what Spectrometer facet_what
facet_what:
Saturn facet_what Saturn facet_what
facet_what:
Cassini facet_what Cassini facet_what
facet_what:
Infrared Spectrometer facet_what Infrared Spectrometer facet_what
facet_what:
Dawn facet_what Dawn facet_what
facet_what:
Cassini Orbiter facet_what Cassini Orbiter facet_what
facet_what:
Huygens Probe facet_what Huygens Probe facet_what
facet_what:
Cassini-Huygens facet_what Cassini-Huygens facet_what
facet_what:
Composite Infrared Spectrometer facet_what Composite Infrared Spectrometer facet_what
facet_where:
Saturn facet_where Saturn facet_where
facet_where:
California facet_where California facet_where
facet_where:
Washington facet_where Washington facet_where
facet_where:
Jet Propulsion Laboratory (JPL) facet_where Jet Propulsion Laboratory (JPL) facet_where
facet_where:
Goddard Space Flight Center (GSFC) facet_where Goddard Space Flight Center (GSFC) facet_where
facet_where:
Washington, D.C. facet_where Washington, D.C. facet_where
facet_when:
June 11, 2004 facet_when June 11, 2004 facet_when
facet_when_year:
2004 facet_when_year 2004 facet_when_year
Image #:
PIA06403 Image_# PIA06403 Image #
UID:
SPD-PHOTJ-PIA06403 UID SPD-PHOTJ-PIA06403 UID
orignial url:
http://photojournal… orignial_url http://photojournal… orignial url

Phoebe Temperature Maps

Printer Friendly

Add To Workspace

Export

Media Information

Phoebe Temperature Maps