 The presence of two rather small planets, as well as the orbital configuration of the first three planets, is not expected for Hot Jupiter systems, as a migrating gas giant is thought to kick out any small inner planets.In order for the system to come out the way it is now, the two gas giants likely would have to have formed before the lower-mass planets e and d. This is called two-stage planetary formation, and is predicted to have happened in our Solar system as well.It is predicted that WASP-47b would have moved inwards and brought planet-forming material close to the star.