Result of the SPIPS modeling for the Cepheid δ Cep (P = 5.36 days). This star has the most complete dataset available, with interferometric angular diameters, spectroscopic effective temperatures, and full phase coverage multiband photometry and radial velocities from many studies. The Gaia EDR3 parallax used in this adjustment is unreliable, with a RUWE parameter of 2.71. In order to take advantage of its data, we present in Table 1 the results of the adjustment using the accurate Gaia EDR3 parallax of its companion derived by (Kervella et al. 2019b).