Radial velocity solutions based on the CRÉME (red and blue points) and literature (grey) measurements. Phase 0 is set to T_P – the time of pericentre passage (for e > 0) or quadrature (for e = 0). A141235 and A180413 are SB1 systems with secondary (cooler) components visible. Solution for RZ Eri was re-done using RVs from Popper (1988) and Merle et al. (2024), and TESS photometry. The panel for SZ Cen was created from the original values taken from Andersen (1975). The observations of BQ Aqr are the same as in Ratajczak et al. (2016), but the model has been refined.