Fit of the observed spectrum of the CCO in HESS J1731−347 using two components (the hotspots and the remaining stellar surface) of the pure hydrogen atmosphere model spectra computed with Compton scattering. The assumed distance is 3.2 kpc. The NS mass and radius are fixed to M = 1.5 M_⊙ and R = 12 km. The reduced χ² is 1.08 (893 d.o.f.) corresponding to the null-hypothesis probability of P ≃ 0.04. The contribution of the cold and hot components are indicated with the dashed green and magenta curves, respectively.