P004:
Cassini Saturn Science: From Interior to Ionosphere





Session ID#: 27050

Session Description:
The Cassini-Huygens mission to Saturn ended in a dramatic plunge into Saturn’s atmosphere in September 2017 sending back data as long as possible.  Preceding this, Cassini executed a series of twenty-two highly inclined “Grand Finale” orbits with closest approach between the innermost rings and atmosphere.  These orbits provided the unique opportunity to determine higher-order gravitational and magnetic field moments, the composition and structure of the upper atmosphere and exosphere, and the composition of ring particles falling into Saturn’s atmosphere.  Cassini collected data that constrained the helium-to-hydrogen ratio in the upper atmosphere.  In addition, the highest resolution imaging of Saturn’s polar vortices, hexagonal jet stream, storms and aurora were obtained.  Cassini also used passive RADAR to look of fine scale structure in the ammonia abundance.  This session reports on results from the unique data sets collected during this once-in-a-lifetime opportunity to explore Saturn up close and personal.
Primary Convener:  Scott G Edgington, NASA Jet Propulsion Laboratory, Pasadena, CA, United States
Conveners:  Andrew P. Ingersoll, California Institute of Technology, Pasadena, CA, United States, Tommi Koskinen, University of Arizona, Tucson, AZ, United States and Jonathan J Fortney, University of California Santa Cruz, Santa Cruz, CA, United States

Cross-Listed:
  • SM - SPA-Magnetospheric Physics
Index Terms:

5714 Gravitational fields [PLANETARY SCIENCES: FLUID PLANETS]
5724 Interiors [PLANETARY SCIENCES: FLUID PLANETS]
5734 Magnetic fields and magnetism [PLANETARY SCIENCES: FLUID PLANETS]
6275 Saturn [PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS]

Abstracts Submitted to this Session:

Eli Galanti1, Daniele Durante2, Luciano Iess2, William B Hubbard3 and Yohai Kaspi1, (1)Weizmann Institute of Science, Rehovot, Israel, (2)Sapienza University of Rome, Rome, Italy, (3)University of Arizona, Tucson, AZ, United States
Mau Wong, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Dylan Boone, NASA Jet Propulsion Laboratory, Pasadena, United States and Duane C Roth, NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
Krishan K Khurana, University of California Los Angeles, Los Angeles, CA, United States, Michele Karen Dougherty, Imperial College, London, United Kingdom, Hao Cao, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, Gregory James Hunt, Imperial College London, Blackett Laboratory, London, United Kingdom, Gabrielle Provan, University of Leicester, Physics and Astronomy, Leicester, United Kingdom and The Cassini Magnetometer Team
Hao Cao1, Michele Karen Dougherty2, Krishan K Khurana3, Gregory James Hunt4, Gabrielle Provan5, Stephen Kellock4, Marcia E Burton6, Thomas A. Burk6 and the Cassini Magnetometer Team, (1)California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, (2)Imperial College, London, United Kingdom, (3)University of California Los Angeles, Los Angeles, CA, United States, (4)Imperial College London, Blackett Laboratory, London, United Kingdom, (5)University of Leicester, Leicester, United Kingdom, (6)JPL, Pasadena, CA, United States
Naor Movshovitz1, Jonathan J Fortney1, Ravit Helled2, William B Hubbard3, Christopher Mankovich1, Daniel Thorngren1, Sean M Wahl4, Burkhard Militzer5 and Daniele Durante6, (1)University of California Santa Cruz, Santa Cruz, CA, United States, (2)University of Zurich, Zurich, Switzerland, (3)University of Arizona, Tucson, AZ, United States, (4)University of California, Berkeley, Berkeley, CA, United States, (5)University of California Berkeley, Berkeley, CA, United States, (6)Sapienza University of Rome, Rome, Italy
F Michael Flasar1, Richard K Achterberg2, Gordon L Bjoraker1, Brigette E Hesman3, Nicolas Gorius4 and Cassini CIRS Investigation Team, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)University of Maryland, Department of Astronomy, College Park, MD, United States, (3)Space Telescope Science Institute, Baltimore, MD, United States, (4)Catholic University of America, Washington, DC, United States
John J Blalock1, Kunio M Sayanagi1, Andrew P. Ingersoll2, Ulyana Dyudina2, Shawn P. Ewald2, Ryan M McCabe1, Justin Garland1, Jacob Gunnarson1 and Angelina Gallego1, (1)Hampton University, Hampton, VA, United States, (2)California Institute of Technology, Pasadena, CA, United States
Burkhard Militzer1, William B Hubbard2, Sean M Wahl1, Luciano Iess3, Jonathan J Fortney4 and Linda Joyce Spilker3, (1)University of California Berkeley, Berkeley, CA, United States, (2)University of Arizona, Tucson, AZ, United States, (3)Jet Propulsion Laboratory, Pasadena, CA, United States, (4)University of California Santa Cruz, Santa Cruz, CA, United States
Wayne Robert Pryor1, Larry W Esposito2, Robert A West3, Alain Jouchoux2, Aikaterini Radioti4, Denis C Grodent4, Jean-Claude M C Gerard4, Jacques Gustin4, Laurent Lamy5, Sarah Victoria Badman6 and HST Saturn Aurora Team, (1)Central Arizona College, Coolidge, AZ, United States, (2)LASP/University of Colorado, Boulder, CO, United States, (3)Jet Propulsion Lab, Pasadena, CA, United States, (4)Université de Liège, Liège, Belgium, (5)Observatoire de Paris, Meudon, France, (6)Lancaster University, Lancaster, United Kingdom
Luke Moore, Boston University, Boston, MA, United States, Ingo C F Mueller-Wodarg, Imperial College London, London, SW7, United Kingdom, Thomas Cravens, University of Kansas, Lawrence, KS, United States and The Cassini Ion Neutral Mass Spectrometer Team
Lotfi Ben-Jaffel1, Kevin H Baines2, Gilda Ballester3, Holberg B. Holberg3, Tommi Koskinen3, Julianne I Moses4, Robert A. West5 and Roger V Yelle3, (1)Institut d'Astrophysique de Paris, Paris, France, (2)Jet Propulsion Lab, Pasadena, CA, United States, (3)University of Arizona, Tucson, AZ, United States, (4)Space Science Institute, Seabrook, TX, United States, (5)Jet Propulsion Laboratory, Pasadena, CA, United States

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