Corner plot of the UltraNest run posterior probability distributions for the eight orbital parameters: M_A the mass of the AGB star in M_⊙, q the mass ratio, a the semi-major axis in au, e the eccentricity, Ω the longitude of the ascending node in degrees, ω the longitude of the periastron in degrees, i the inclination in degrees, and τ₀ the periastron epoch. For the diagonal distributions, the central vertical dashed line indicates the mean value of the probability distribution, while the left and right vertical dashed lines correspond to the 68.3% credible probability level. Blue lines indicate the maximum likelihood parameters. Contours show the 68.3%, 39.3% posterior and 68.3% marginal posterior distributions. For Ω and ω, the full range of angles is explored, and the horizontal axis is wrapped.