Results from our Monte Carlo simulations for HR 8799d. One-dimensional PDFs from all possible solutions are shown for each of the seven free parameters. Solid lines represent unweighted solutions while dashed lines show weighted solutions. An eccentricity upper limit of <0.7 is seen, with an inclination of 45° ± 8°. While this inclination is slightly offset from HR 8799b and c, it is consistent to within the uncertainties.