News Release Archive:

News Release 78 of 192

February 16, 2005 02:00 PM (EST)

News Release Number: STScI-2005-06

Saturn's Auroras Defy Scientists' Expectations

Technical facts about this news release:

About the Object
Object Name: Saturn
Object Description: Planet
Distance: The semi-major axis of Saturn's orbit about the sun is 9.5 Astronomical Units (A.U.) or roughly 1.4 billion km.
Dimensions: The planet (without rings) has a diameter of roughly 75,000 miles (120,000 km) at the equator.
About the Data
Data Description: The Hubble image was created from HST ACS data from proposal 9354: E. Karkoschka and M. Tomasko (Univ. of Arizona) and STIS data from proposal 10083: J.T. Clarke (Boston Univ.) and collaborators. The science team includes J.T. Clarke (Boston Univ.), J.-C. Gerard and D. Grodent (Univ. de Liege), S. Wannawichian (Boston Univ.), J. Gustin (Univ. de Liege), J. Connerney (NASA Goddard Space Flight Center), F. Crary (Southwest Research Institute), M. Dougherty (Imperial College, London), W. Kurth (Univ. of Iowa), S.W.H. Cowley and E.J. Bunce (Univ. of Leicester), T. Hill (Rice Univ.) and J. Kim (Yonsei Univ., Seoul, Korea)
Instrument: ACS/HRC STIS
Exposure Date(s): March 22, 2004 January 24, 26, 28, 30, 2004
Filters: F439W (B), F502N ([O III]), F550W (V), F658N (H-alpha) 25MAMA (Near-UV) and F25SRF2 (Far-UV)


About the Image
Image Credit: NASA, ESA, J. Clarke (Boston University) and Z. Levay (STScI)
Release Date: February 16, 2005
Orientation: Saturn Aurora — January 24, 2004