Orbital projections for the time-span covered by the observations. The origin is the system barycenter, and the orbits are projected in the X-Z plane (left panel, system top view, movement is clockwise, the positive Z-axis points towards the observer) and in the sky plane seen by the observer (X-Y, right panel). A thousand random orbits were drawn from the posterior samples, and the MAP is shown as a gray orbit. In the left panel, the black circles mark the position of the star (size to scale) and the planets (enlarged by a factor of 20) at tref for the MAP.