Bienor’s rotational light curve taken in 2014. The data was folded using a rotation period of 9.1719 ± 0.0002 h, being the zero rotational phase at the moment of the stellar occultation. Light blue dots represent observation data and the dark blue line represents a second-order Fourier-function fit, with an amplitude of 0.088 ± 0.007 mag. The gray vertical line indicates the rotational phase of the two Herschel measurements, with the gray shadowed region representing the error. At the bottom panel, gray dots represent the residual of the fit to the observational data. (Adapted from Fernández-Valenzuela et al. 2017.)