Planetary Simulant Database

Free Resource for Regolith Simulant Information


Fe-Ca-Mg Carbonate
Fe-Ni sulfides
Carbonate nanoparticles
Polymer organics

Bulk Chemistry

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Physical Properties

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UTPS-TB Univ Tokyo Phobos Simulant Tagish-based

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Simulant Name: UTPS-TB
Availability: May Be Available
Fidelity: Basic
Developed By: University of Tokyo
Available From: N/A
Publications: Miyamoto, H. et al. (2018), Phobos environment model and regolith simulant for MMX mission. LPSC XLIX, Abstract #1882.

The University of Tokyo Phobos Simulant, Tagish Lake-based simulant is paired with UTPS-IB. Both simulants were developed to aid with engineering and hardware for the MMX mission, a sample return from Phobos planned to launch in 2024. The recipes for these two simulants are based on those developed by UCF: PCA-1 and PGI-1, and were created using similar methods. The -TB variety is based on the mineralogy of the Tagish Lake meteorite, a suitable spectral match to surface materials on Phobos.

To date over 100 kg of each of UTPS-TB and UTPS-IB have been developed, with plans for up to 10 tons more. It is not clear whether these simulants will be made available outside of the official MMX activities.