Confidence maps for all combinations of orbital parameters plus eccentricity versus mass function, semimajor axis, and periastron distance: the color codes the χ² differences Δχ² with respect to the best fit. The conversion to joint-confidence levels (CL), which are calculated from the Δχ² values by means of the cumulative distribution function for 2 degrees of freedom (d.o.f.), is shown as well. The magenta error bars indicate single-parameter 1σ-confidence intervals computed from the condition Δχ² ≤ 1.