Planetary mass against orbital period plot. Exoplanet data are taken from the NASA Exoplanet Archive (http://exoplanetarchive.ipac.caltech.edu/) and are plotted as grey dots. WASP-127b, WASP-136b, and WASP-138b are represented by green, red, and cyan circles, respectively. The black dashed lines are the upper and lower boundaries of the Neptune desert as defined by Mazeh et al. (2016). WASP-127b falls in this Neptune desert between Jovian and super-Earth planets.