Energy Budgets for Habitable Exomoons: Stellar, Reflected, Thermal and Tidal Fluxes Combined

This paper computes a quantitative budget for one aspect of exomoon physics: the subject stated in the title, evaluated from stated assumptions with every number produced by the deposited calculation. Headline results are earth_equiv_Teff_K = 262; earth_equiv_total_W_m2 = 266; outer_case_Teff_K = 187; outer_case_total_W_m2 = 69; io_tide_case_total_W_m2 = 268. A moon receives energy from four sources its planet-bound counterpart does not combine in the same way: direct starlight, starlight reflected from the planet, the planet's own thermal emission, and tidal dissipation in the moon's interior. The sum, not the stellar term alone, decides whether surface water is stable, and it can push a moon into a runaway greenhouse inside the nominal habitable zone The results are compared with published Solar System values and with the constraints attached to reported exomoon candidates where those apply, and the conditions under which the computed budget would change are stated explicitly. Computed from stated assumptions, not measured.