Reflectance of different bands and different methods of J1604. Notably, the black and blue points overlap in the K1 band. We present the relative reflectance values expressed in units of mag arcsec⁻², where the magnitude is calculated as −2.5 log₁₀ ƒ_ref with ƒ_ref representing reflectance ratio. Notably, we obtained the polarized disk intensity instead of the total intensity in the R band. For J1604 in the R band, we estimate the total intensity reflectance using polarization data while assuming a polarization fraction (see Sect. 3.2).