Mass – orbital period of known planets with msini< 40M_⊕, Δmsini/msini< 0.3. Another three planets with P> 300 days are not represented because of visibility problems. Transiting planets are shown in red, while the others are black. Triangles correspond to planets in multiplanetary systems. HD 164595b and HD 190360c are the blue circle and triangle. The green curves refer to the 3 m s^-1 (dashed) and 1 m s^-1 (solid) iso RV semi-amplitudes for a solar-type star. This diagram is based on data from the exoplanet.org database.