Left panel: impact parameter versus planetary density of known exoplanets with available information. Right panel: fraction of the projected planet transiting its host star as a function of the impact parameter. In both panels, Kepler-447b has been highlighted in red color and big circle symbol, including uncertainties. For reference, WASP-67b is also highlighted in light blue color with a square symbol. For clarity reasons, we do not include uncertainties for the other planets.