Flux measurements, spectral energy distribution, and relative emissivity spectra (in inset) of Makemake, for the three considered models. Model fit parameters are as follows. Left: “Makemake alone” model: D = 1430 km, p_v = 0.795, η = 1.69. Center: “Makemake + moon” model: for Makemake, D = 1430 km, p_v = 0.795, η = 2.64; for the moon, D = 323 km, p_v = 0.012, η = 0.406. Right: “Makemake + dust” model: for Makemake, D = 1430 km, p_v = 0.795, η = 1.95; for the dust, T = 54.6 K, mass = 7.2 × 10⁹ kg. In the left panel, different colors show NEATM fits applied to the conditions of the different observations (Spitzer, Herschel, and ALMA). In the other two panels, the models are shown for the Herschel conditions.