Capotauro’s CAPERS spectrum (gray line) and rebinned spectrum (see Figure 1) with HST and JWST/NIRCam photometry (black circles, with 1σ upper limits depicted as triangles) compared to our best-fit ATMO 2020 template (Phillips et al. 2020; blue line). For comparison, we report the JWST/NIRSpec PRISM spectrum of the coldest known BD WISE J0855-0714 (Luhman et al. 2024; green line) and of the Y0 BD WISE 0359-5401 (Beiler et al. 2023; orange line) rescaled to match Capotauro’s JWST/NIRCam photometry (from d ∼ 2.28 pc to d ∼ 307 pc and from d ∼ 13.6 pc to d ∼ 1.1 kpc respectively).