Radius and masses of the known transiting exoplanets (black empty circles). The position of Kepler-432 b is marked by the red triangle. The Fortney et al. (2007) isochrones for planet core masses of 0, 10, 25, 50, and 100 M_⊕ – interpolated to the insolation and age of Kepler-432 b – are overplotted with dashed lines from top to bottom. The upper left inset is a zoom around Kepler-432 b. Also shown are models for planets of different compositions derived by Seager et al. (2007). Solar system planets are marked with magenta letters. We note that Kepler-432 b falls in a region with a lack of planets between ~4.5 and ~7 M_Jup.