Best-fit SEDs for Himiko with unconstrained models (magenta) or imposing the constraint on UV attenuation of A_UV< 0.4 (black). Red crosses show the synthesized fluxes in the photometric bands, black circles the observations. The two solutions differ strongly in age, extinction, SFR, mass, and sSFR. The young one (magenta) overproduces the IR luminosity (see text). The IRAC channel 1 (3.6 μm) is contaminated by [O iii] λλ4959, 5007 and Hβ emission lines; Hα contributes weakly to channel 2 (4.5 μm). The relatively weak emission line at ~4.5 μm is He i λ5876.