When Kepler’s K2 mission started monitoring planetary systems where WASP had previously found hot Jupiters, one of the early discoveries was extra planets in the WASP-47 system, small rocky planets with transits too shallow to have been found by WASP.

Now, a similar finding for the WASP-84 system has been announced by Gracjan Maciejewski etal. WASP found a Jupiter-sized planet in an 8-day orbit, while lightcurves from NASA’s TESS satellite also show a super-Earth planet with an orbit of 1.4 days.

The mass of both planets can be gained from the radial-velocity motion of the host star:

The new planet has a rocky, Earth-like composition.