Lunar limb profile (black curves) in comparison with the solar limb profile (red circles) under boundary ΔT values: (left) 140 s and (right) 151 s, when the R_⊙ is set to Auwers's canonical value (696,000 km). The position angles are measured from the direction of the celestial north, in contrast with SJM97, who may have obtained the position angle from the lunar rotation axis. The lunar topography data are derived from the KAGUYA mission (A+09), following S+12’s method. The lunar limb profile is emphasized by a factor of ≈50 for visual presentation (see also H+26a).