The codes in this folder allow fitting abundance of fine regolith and thermal inertia of rocks to the data collected by the OSIRIS-REx Thermal Emission Spectrometer using the method by Cambioni et al. 2019 [1] and analyze the results. The codes supports the findings of the paper: Cambioni, Delbo, Poggiali, Avdellidou, Ryan, Deshapriya, Asphaug, Ballouz, Barucci, Bennett, Bottke, Brucato, Burke, Cloutis, DellaGiustina, Emery, Rozitis, Walsh, Lauretta. "Fine-regolith production on asteroids controlled by rock porosity" (Submitted 2021-03-11). [1] Cambioni, S., Delbo, M., Ryan, A. J., Furfaro, R. & Asphaug, E. Constraining the thermal properties of planetary surfaces using machine learning: Application to airless bodies. Icarus 325, 16–30 (2019).