Orbital period from the nss_two_body_orbit table vs. photometric period from the vari_long_period_variable table. Top, middle, and bottom panels: correspond to different filtering based on the SB1 significance (respectively, larger than 5, 20, and 40). The two sequences observed in all panels correspond to P_lpv/P_nss = 0.5 (ellipsoidal variables; upper sequence) and P_lpv/P_nss = 1 (LPVs or rotational modulation in a synchronised system; lower sequence). Top panel: crosses denote NSS solutions for which the Roche-lobe filling factor is above unity, and therefore unphysical. The filtering with significance larger than 40 makes these latter disappear almost entirely.