LCO 2.0 m/MuSCAT3 light curves of the target, BD+05 4868 A, and its fainter binary companion, BD+05 4868 B, obtained on UT 2024 October 17. (a) The light curves of each of the four bands are shown in the top panels, with the data in small gray points overplotted by binned light curves. The g_p, r_p, i_p, and z_s binned light curves are plotted in blue circles, green triangles, orange squares, and red diamonds, respectively. The BD+05 4868 A light curve is also shown in the bottom panel, indicating that it is similar in depth and overall shape to that of the TESS light curves (red solid line), although there is a small difference due the varying shape of the transits across each orbit (see Figure 8). (e) A comparison of transits in the LCO light curve with the observed mean transit profile from TESS data. A small flux offset was applied to the LCO light curves in this panel to align them with the TESS transit profile.