Brighter Neptune Suggests a Planetary Change of Seasons
Title
Brighter Neptune Suggests a Planetary Change of Seasons
Title
Object Name:
Neptune
Object_Name
Neptune
Object Name
Acknowledgement:
*Credit:* NASA [ http://www.nasa.gov/], L. Sromovsky, and P. Fry (University of Wisconsin-Madison)
Acknowledgement
*Credit:* NASA [ http://www.nasa.gov/], L. Sromovsky, and P. Fry (University of Wisconsin-Madison)
Acknowledgement
Fast Facts:
Technical facts about this news release:
About the Object Object Name: Neptune Object Description: Planet Distance: The semi-major axis of Neptune's orbit about the Sun is 30.06 Astronomical Units (A.U.) or roughly 4.5 billion km. Dimensions: The planet has a diameter of roughly 30,800 miles (49,600 km) at the equator. About the Data Data Description: These data are from HST proposals 6650, 7324 and 9393. The science team includes L. A. Sromovsky, P. M. Fry, and S. S. Limaye (University of Wisconsin-Madison's Space Science and Engineering Center), and K. Baines (JPL). Instrument: WFPC2 Exposure Date(s): August 13/14, 1996; August 11/12, 1998, August 9/10, 2002 Filters: F467M (Strömgren "b" ), F673N ([S II]), and F850LP (9650Å) About the Image Image Credit: NASA, L. Sromovsky and P. Fry (University of Wisconsin?Madison) Release Date: May 15, 2003
Fast_Facts
Technical facts about this news release:
About the Object Object Name: Neptune Object Description: Planet Distance: The semi-major axis of Neptune's orbit about the Sun is 30.06 Astronomical Units (A.U.) or roughly 4.5 billion km. Dimensions: The planet has a diameter of roughly 30,800 miles (49,600 km) at the equator. About the Data Data Description: These data are from HST proposals 6650, 7324 and 9393. The science team includes L. A. Sromovsky, P. M. Fry, and S. S. Limaye (University of Wisconsin-Madison's Space Science and Engineering Center), and K. Baines (JPL). Instrument: WFPC2 Exposure Date(s): August 13/14, 1996; August 11/12, 1998, August 9/10, 2002 Filters: F467M (Strömgren "b" ), F673N ([S II]), and F850LP (9650Å) About the Image Image Credit: NASA, L. Sromovsky and P. Fry (University of Wisconsin?Madison) Release Date: May 15, 2003
Fast Facts
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*Image Type:*: Astronomical/Illustr ation
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*Image Type:*: Astronomical/Illustr ation
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*Release Date*:May 15, 2003 09:00 AM (EDT)
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*Release Date*:May 15, 2003 09:00 AM (EDT)
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*Title*:Brighter Neptune Suggests a Planetary Change of Seasons
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*Title*:Brighter Neptune Suggests a Planetary Change of Seasons
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*News Release Number:*: STScI-2003-17e
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*News Release Number:*: STScI-2003-17e
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*Description*:
These individual color composite images used Hubble blue, green and red filters. Each image component was also processed to reduce limb darkening and enhance contrast, and is a blend of several images taken at different longitudes. The images for each year were processed the same as for other years so that relative temporal changes are meaningful. The first four columns display views at 0, 1/4, 1/2, and 3/4 rotations, to show the distributions of features. The last column displays the longitudinal average, showing that latitude bands near 30 S, 45 S, and 67 S, have increased dramatically in brightness.
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*Description*:
These individual color composite images used Hubble blue, green and red filters. Each image component was also processed to reduce limb darkening and enhance contrast, and is a blend of several images taken at different longitudes. The images for each year were processed the same as for other years so that relative temporal changes are meaningful. The first four columns display views at 0, 1/4, 1/2, and 3/4 rotations, to show the distributions of features. The last column displays the longitudinal average, showing that latitude bands near 30 S, 45 S, and 67 S, have increased dramatically in brightness.
