Left: illustration of the components of the DSO model explained as a pre-main-sequence star. The right side explains possible sources of the changes in the continuum emission of the DSO/G2 (polarization degree and angle). Right: calculated SED for the composite model of the DSO (star, dusty envelope, bipolar cavities, bow shock) for the viewing angle of 90°. The thick solid line stands for the total continuum flux density, whereas grey lines represent individual source contributions (see the key). The points represent observationally inferred flux densities/limits for H, K_s, L′, and M bands.