Orbital projections. Top: orbital projections around the time of the RISE transit for planet b (blue) and planet c (orange). The origin is the system barycentre, and the orbits are projected in the sky plane seen by the observer (X – Y, left) and X – Z plane (right, system top view, the movement is clockwise, the positive Z-axis points towards the observer). A thousand random orbits were drawn from the posterior samples, and the MAP is shown as a black orbit. The black points mark the position of the star (size to scale) and the planets at the central time of the RISE transit for the MAP (the size of planet b is enlarged by a factor of 10, and the size of planet c is not known). Bottom: Idem as for 1000 stable solutions (Sect. 7.5).