Study of TTV and TdV in transiting planets around active stars

In this contribution we present preliminary results of the search for transit depth and transit timing variations (TdV and TTV, respectively) in a Jupiter like-planet orbiting an active main-sequence star. The positive detection of a periodic behavior might suggest the presence of another planetary-mass body in the system. However, since previous reports point out that the host-star presents photometric variations of ~ 20 mmag in amplitude, both differences in depth and mid-transit times could be caused by spots over the stellar surface. In this study we investigate if there are such variations in the mentioned parameters and what is its origin. As a by-product, we re-determine the photometric parameters of the system and re-calculated ephemeris.