Phobos regolith simulants PGI-1 and PCA-1 |
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Authors: | Zoe A Landsman Cody D Schultz Daniel T Britt Makayla Peppin Ryan L Kobrick Philip T Metzger Nina Orlovskaya |
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Institution: | 1. The University of Central Florida, Department of Physics, 4111 Libra Drive, Physical Sciences Bldg. 430, Orlando, FL 32816, United States;2. Brown University, Department of Earth, Environmental and Planetary Sciences, Box 1846, 324 Brook Street, Providence, RI 02912, United States;3. Embry Riddle Aeronautical University, Department of Applied Aviation Sciences, 1 Aerospace Boulevard, Daytona Beach, FL 32114, United States;4. Florida Space Institute, 12354 Research Parkway, Partnership 1 Building, Suite 214, University of Central Florida, Orlando, FL 32826, United States;5. University of Central Florida, Department of Mechanical and Aerospace Engineering, 12760 Pegasus Drive, Orlando, FL 32816, United States |
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Abstract: | The Martian moon Phobos is the target of the upcoming JAXA Martian Moons eXploration (MMX) mission. There are currently no known samples of Phobos, so spacecraft hardware testing and scientific studies require Phobos regolith simulants. Here, we present two new Phobos regolith simulants: Phobos Captured Asteroid-1 (PCA-1) and Phobos Giant Impact (PGI-1). These two simulants reflect the two hypotheses for Phobos’s formation, and thus the two broad possibilities for composition. This work follows previous efforts to document the development of mineralogically accurate simulants, in an effort to overcome past pitfalls with inappropriate uses of simulants. We report physical and geotechnical properties of PCA-1 and PGI-1, including their reflectance spectra, grain size distributions, abrasivity, cohesion, strength, and hardness. Our intent is for PCA-1 and PGI-1 to be open standards for Phobos simulants, and we present the simulant recipes and production methodology for use and modification by the community. |
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Keywords: | Phobos Mars Regolith Simulant Simulated planetary materials |
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