Posterior probability distributions of the planets’ masses, inclination, longitude of the ascending node, and parallax. The shades of gray indicate the 1σ, 2σ, and 3σ confidence ranges of the parameters. Red symbols with circle/ellipse contours in the top panels show the astrophysical mass constraints (Wang et al. 2018), which are the priors in the DE-MC sampling. The red curve in the bottom right panel is the prior put on the parallax according to the Gaia DR2 catalog (Gaia Collaboration et al. 2018). See also Table 1 and its notes.