Simulated vs. recovered eccentricity. Panels, symbols, and colours as in Fig. 6. The eccentricity is recovered in most cases, albeit with large uncertainties. When the MC are started using the circular orbits model (lower panels), some systems with e_input ≲ 0.4 are incorrectly fit with very elliptical orbits (e_output ~ 1), especially in the 5 yr mission; these systems are the same as those that lie in the parallel sequences of Fig. 6.