Comparison between the spectra of 2023 DZ₂ obtained with GTC and the spectro-photometric data obtained with TCS. In order to convert the TCS data, the following colours of the Sun are used: (g – r)^Sun = 0.50 mag, (r – i)^Sun = 0.10 mag, (i – z_s)^Sun = 0.03 mag. These values were derived by considering the profiles of the filters available for the MuSCAT2 instrument and are consistent with those provided by Holmberg et al. (2006).