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 Planetary Ices (3227): People
Julie  Castillo's Picture
Jet Propulsion Laboratory
M/S 79-24
4800 Oak Grove Drive
Pasadena, CA 91109
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Curriculum Vitae:

Julie Castillo

Julie Castillo-Rogez is a planetary scientist specializing in water-rich objects from a modeling and experimental perspectives applied to the formulation, design, and planning of planetary missions. Her current activities focus on Ceres, target of the Dawn mission, Mars' moons in the frame of the Human exploration program, as well as other small bodies whose study can help improve our understanding of the early Solar system.

  • B.S. Geology, University of Nantes, France (1997)
  • M.S., Geophysics, University of Rennes, France (1998)
  • Ph.D., Planetary Geophysics, University of Rennes, France (2001)

Research Interests
  • The geophysics of small bodies (asteroids, irregular satellites)
  • Experimental Measurements of Ice Mechanical Properties
  • The Signatures of Tides throughout the Solar System


Cassini-Huygens Icon Cassini-Huygens
The Cassini-Huygens spacecraft is currently exploring the ringed planet, its mysterious moons, the stunning rings and its complex magnetic environment.

Dawn Icon Dawn
Dawn's goal is to characterize the conditions and processes of the solar system's earliest epoch by investigating in detail two of the largest protoplanets remaining intact since their formations.

InSight Icon InSight
InSight (Interior Exploration using Seismic Investigations, Geodesy and Heat Transport) is a NASA Discovery Program mission that will place a single geophysical lander on Mars to study its deep interior.

Professional Experience
  • Scientist, Jet Propulsion Laboratory, California Inst. Tech., (2007-Present)
    • Lead, Planetary Tides Simulation Facility and Ice Factory (Ice Physics Lab)
    • Titan and Saturn System Mission Science Definition Team (2008)
    • Caltech Postdoctoral Scholar, Jet Propulsion Laboratory (2005-2007)
    • Cassini Mission Radio Science Team Affiliate (2002-2004)
  • National Aeronautics and Space Agency
    • Principal Investigator, "Mars Dissipative Properties at Seismic and Tidal Frequencies," Mars Fundamental Research Program
    • Principal Investigator, "Planetary Ice Attenuation Properties," Outer Planet Research Program
    • Co-Investigator, "Spacecraft/Rover Hybrids for the Exploration of Small Solar System Bodies," Institute for Advanced Concepts (Office of the Chief Technologist)
  • Teaching Assistant, University of Nantes, France (1998-2001)

Selected Publications


  • Science of Solar System Ices, Eds: Murthy Gudipati & Julie Castillo-Rogez, Springer.
  • Publications

    1. Rambaux, N., Castillo-Rogez, J. C., Tides on satellites of giant planets, In: Lecture Notes in Physics, Tidal Effects in Astronomy and Astrophysics, Springer, in press.
    2. Lang, J., Baker, J., Castillo-Rogez J., McElrath, T. P., Piacentine, J. S., Snyder, S., Phobos exploration using two small Solar electric propulsion spacecraft, Proceedings Global Exploration Conference 2012, GLEX-2012.03.2.4x12737.
    3. Klesh, A. T., Castillo-Rogez, J. C. (2012) Nano-satellite secondary spacecraft on deep space missions, Proceedings Global Exploration Conference 2012, GLEX-2012,05,P,14.p1,x12645.
    4. Thompson, D. R., Castillo-Rogez, J. C., Chien, S. A., Doyle, R. J., Estlin, T., McLaren, D. A., Agile science operations: a new approach for primitive bodies exploration, SpaceOps 2012.
    5. Matson, D. L., Johnson, T. V., Lunine, J. I., Castillo-Rogez, J. C., Enceladus' heat pump, Icarus, in press.
    6. Castillo-Rogez, J. C., Pavone, M., Nesnas, I., Hoffman, J. Expected Science Return of Spatially-Extended In-Situ Exploration at Small Solar System Bodies, IEEE Proceedings.
    7. Castillo-Rogez, J. C., Johnson, P. V., Hodyss, R. P. (2012) Development of a library of simulants to support the exploration of primitive bodies, ASCE Earth and Space Science 2012 Proceedings.
    8. Turner, N. J., Choukroun, M., Castillo-Rogez, J. C., Bryden, G., A hot gap around Jupiter's orbit in the Solar nebula, Astroph. J., 794, 92-100.
    9. Charnoz, S., Crida, A., Castillo-Rogez, J., Lainey, V., Dones, L., Accretion of Saturn's mid-sized moons during the viscous spreading of young massive rings: solving the paradox of silicate-poor rings versus silicate-rich moons, Icarus 210, 635-643, doi: 10.1016/j.icarus.2010.08.005.
    10. McCarthy, C. M., Castillo-Rogez, J. C., Planetary ices attenuation properties, Science of Solar System Ices, Eds. M. S. Gutipati, J. Castillo-Rogez, (peer-reviewed), Springer, in press.
    11. Schmidt B., Castillo-Rogez, J. C., Water, heat, bombardment: The evolution and current state of (2) Pallas, Icarus 218, 478-488.
    12. Castillo-Rogez, J. C., Lunine, J. I., Small Worlds Habitability, "Astrobiology: The Next Frontier," Eds: C. Impey, J. Lunine, J. Funes, Cambridge University Press, in press (publication in Oct. 2012)
    13. Castillo-Rogez, J., Johnson, T., Thomas, P., Choukroun, M., Matson, D., Lunine, J., Evolution of Phoebe, a large planetesimal in the outer Solar system, Icarus 219, 86-109 Link
    14. Sharp, P. W., Castillo-Rogez, J. C., Grazier, K. R., The performance of phase-lag enhanced ERKN pairs on N -body simulations, Journal of Computational and Applied Mathematics 236, 2378-2386.
    15. Castillo-Rogez, J. C., Ceres - Neither a porous nor salty ball, Icarus 215, 599-602.
    16. Castillo-Rogez, J. C., Efroimsky, M., Lainey, V., The tidal history of Iapetus. Dissipative spin dynamics in the light of a refined geophysical model, J. Geophys. Res. 116, E09008, doi:10.1029/2010JE003664.
    17. Rambaux, N., Castillo-Rogez, J. C., Dehant, V., Dynamical Rotation of Ceres, Astronomy and Astrophysics 535, doi: 10.1051/0004-6361/201116563 - Work highlighted as NASA Link
    18. McCord, T. B., Castillo-Rogez, J. C., Rivkin, A. S., Ceres: Its Origin, Evolution and Structure and Dawn's Potential Contribution, Space Science Reviews, special issue on the Dawn Mission, doi: 10.1007/s11214-010-9729-9.
    19. McCord, T. B., Castillo-Rogez, J. C., Meeting Report - Thermodynamic evolution of small ice-silicate bodies, EoS (peer-reviewed), EoS, February 2011 issue.
    20. Jones et al. (2011), GISMO Spacecraft design for a New Frontiers mission to Ganymede, IEEE Proceedings.
    21. Choukroun, M., Barmatz, M., Castillo-Rogez, J. C., Understanding the Evolution of Icy Satellites through Cryogenic LM and Raman Studies, Microscopy and Analysis, March 2011.
    22. Robutel, P., Rambaux, N., Castillo-Rogez, J., Analytical description of physical librations of Saturnian coorbital satellites Janus and Epimetheus, Icarus 211, 758-769, doi: 10.1016/j.icarus.2010.09.014.
    23. Castillo-Rogez, J. C., Lunine, J. I. (2010) Evolution of Titan's rocky core constrained by Cassini observations, Geophysical Research Letters 37, L20205, doi: doi:10.1029/2010GL044398.
    24. Matson D. L., Castillo-Rogez J. C., McKinnon W. B., Sotin C., Schubert G., The thermal evolution and internal structure of Saturn's midsize icy satellites, In: Saturn after Cassini-Huygens, Eds: R. Brown, M. Dougherty, L. Esposito, T. Krimigis, H. Waite, Chapter 19, doi: 10.1007/978-1-4020-9217-6_18.
    25. Davies, A. G., Sotin, C., Matson, D. L., Castillo-Rogez, J. C., Johnson, T. V., Choukroun, M., Baines, K. H., Atmospheric Control of the Cooling Rate of Impact Melts and Cryolavas on Titan's Surface, Icarus 208, 887-895, doi:10.1016/j.icarus.2010.02.025.
    26. Castillo-Rogez, J. C., Schmidt, B. E. (2010), Geophysical evolution of the Themis family parent body, Geophys. Res. Lett., 37, L10202, doi:10.1029/2009GL042353.
    27. Rambaux, N., Castillo-Rogez, J. C., Williams, J. G., Karatekin, O. (2010) The librational response of Enceladus, Geophysical Research Letters, 37, L04202, doi:10.1029/2009GL041465.
    28. Castillo-Rogez, J. C., McCord, T. B. (2010) Ceres' evolution and present state constrained by shape data, Icarus 205, 443-459, doi:10.1016/j.icarus.2009.04.008.
    29. Castillo-Rogez, J. C., Johnson, T. V., Lee, M. H., Turner, N., Lunine, J. I., Matson, D. L. (2009) 26Al decay: Heat production and a revised age for Iapetus, Icarus 204, 658-662, doi:10.1016/j.icarus.2009.07.025.
    30. Johnson, T. V., Castillo-Rogez, J. C., Matson, D. L., 2008, Thermal And Dynamical Histories Of Saturn's Satellites: Evidence For The Presence Of Short Lived Radioactive Isotopes, IXth Torino Workshop on Evolution and Nucleosynthesis in AGB Starts and IInd Perugia Workshop on Nuclear. AIP Conference Proceedings 1001, 262-268, doi:10.1063/1.2916974.
    31. Castillo-Rogez J., D. L. Matson, C. Sotin, T. V. Johnson, J. I. Lunine, P. C. Thomas (2007) Iapetus' Geophysics: Rotation Rate, Shape, and Equatorial Ridge, Icarus, doi:10.1016/j.icarus.2007.02.018.
    32. Matson, D. L., Castillo-Rogez, J. C., Lunine, J. and T. V. Johnson 2007: Enceladus' Plume: Compositional Evidence For a Hot Interior, Icarus 187, 569-573 doi:10.1016/j.icarus.2006.10.016., 2007.
    33. Castillo-Rogez J. 2006: The internal structure of Rhea, J. Geophys. Res., 111, E11005, doi:10.1029/2004JE002379.
    34. Matson, D. L., Davies, A. G., Veeder, G. J., Rathbun, J. A.., Johnson, T. V., Castillo, J. C., Io: Loki Patera as a magma sea, Journal of Geophysical Research 111, CiteID E09002, doi:10.1029/2006JE002703.
    35. Castillo, J., Mocquet, A., Saracco, G. (2001) Wavelet transform: A tool for the interpretation of upper mantle converted phases at high frequency, Geophys. Res. Lett. 28 4327-4330, doi: 10.1029/2001GL013214.
    36. Castillo, J., A. Mocquet, and C. Sotin, 2000: Detecting a deep ocean within Europa by means of geodetic measurements, C. R. Acad. Sci. 330, 659-666, doi:10.1016/S1251-8050(00)00195-6.

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