Extended Data Fig. 1: The thermal inertia of Bennu’s rocks and the surface abundance of fine regolith were measured in 122 quasi-randomly–distributed regions.
From: Fine-regolith production on asteroids controlled by rock porosity
a, OTES spots on Bennu plotted on the global basemap of Bennu32 as function of longitude and latitude (red: Equatorial Station 1 at 3:00 pm, or EQ1; blue: Equatorial Station 2 at 3:20 am, or EQ2). b, comparison between modelled and observed radiance for one of the 122 areas (ID: 609491396:610102222). c, comparison between the emissivity of Bennu and the residuals of the analysis for the spots 609491396:610102222; the residual curves closely resemble Bennu’s emissivity, which is not modelled by our thermophysical model. The error bars correspond to 3 times the Noise Equivalent Spectral Radiance of the OTES instrument15. Credit for global mosaic in panel a: NASA/Goddard/University of Arizona.
