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Although the majority of radial velocity detected planets have been foundorbiting solar-type stars, a fraction of them have been discovered around giantstars. These planetary systems have revealed different orbital properties whencompared to solar-type stars companions. In particular, radial velocity surveyshave shown that there is a lack of giant planets in close-in orbits aroundgiant stars, in contrast to the known population of hot-Jupiters orbitingsolar-type stars. The reason of this distinctive feature in the semimajor-axisdistribution has been theorized to be the result of the stellar evolutionand/or due to the effect of a different formation/evolution scenario forplanets around intermediate-mass stars. However, in the past few years, ahandful of transiting short-period planets (P$\lesssim$ 10 days) have beenfound around giant stars, thanks to the high precision photometric dataobtained initially by the Kepler mission, and later by its two-wheels extensionK2. These new discoveries, have allowed us for the first time to study theorbital properties and physical parameters of these intriguing and elusivesub-stellar companions. In this paper we report on an independent discovery ofa transiting planet in field 10 of the K2 mission, also reported recently byGrunblatt et al. (2017). The main orbital parameters of EPIC\,228754001\,$b$,obtained with all the available data for the system, are the following: $P$ =9.1708 $\pm$ 0.0025 $d$, $e$ = 0.290 $\pm$ 0.049, Mp = 0.495 $\pm$ 0.007 Mjup\,and Rp = 1.089 $\pm$ 0.006 Rjup. This is the fifth known planet orbiting anygiant star with $a < 0.1$, and the most eccentric one among them, makingEPIC\,228754001\,$b$ a very interesting object.

A hot Saturn on an eccentric orbit around the giant star EPIC228754001