1. Lunar and Planetary Institute; Universities Space Research Association; Houston TX USA
2. Southwest Research Institute; San Antonio TX USA
3. Department of Physics and Astronomy; University of Texas at San Antonio; San Antonio TX USA
4. The Johns Hopkins University Applied Physics Laboratory; Laurel MD USA
5. Planetary Sciences Institute; Tucson AZ USA
6. Southwest Research Institute; Boulder CO USA
7. Science Division; Central Arizona College; Coolidge AZ USA