(Minimum) mass vs. orbital period plot of confirmed exoplanets from NASA Exoplanet Archive with orbital periods less than 100 d and minimum masses less than 15 M_⊗. The red stars represents planets around M-dwarfs stars, whereas the gray colour depicts planets around other types of stars. The green star represents the position of GJ 3899 b in the diagram. For completeness, we also include GJ 724 b, represented as a blue star.