Fig. 3
From: Orbital bistatic radar observations of asteroid Vesta by the Dawn mission
Comparison of BSR results with observations by the GRaND and VIR instruments aboard Dawn. Map a shows the distribution of relative radar cross section interpolated between echo sites and overlain upon an equirectangular projection of Vesta’s surface; b shows subsurface [H] to a depth of a few decimeters17; c shows the distribution of hydrated material at the surface18; and d shows the surface’s thermal inertia and multi-meter-scale topography modeled from VIR thermal observations19. O’s and X’s mark locations where BSR surface echoes have been detected during the associated orbit number
