Normalized histogram of the observed semimajor axis distribution of all extrasolar planets with known semimajor axes and masses >0.1 M_J around stars with masses 0.75 M_⊙ ≤ M_⋆ ≤ 1.25 M_⊙ (672 intotal). Data are from the Extrasolar Planets Encyclopaedia at http://exoplanet.eu (Schneider et al. 2011) as of 9 January 2019. The solid lines illustrate the and 1∕a dependences of the RV amplitude and the geometric transit probability, respectively. Orbital positions of 19 planets with known stellar obliquities are shown with open (ψ > 45°) and closed (ψ ≤ 45°) circles. While the scaling of the abscissa is logarithmic, the bin width is constant to suppress binning artefacts (see Appendix A).