... Future seminars . P a s t seminars . ... Hints of the fourth planet in the ? ... This star is currently believed to host 3 giant planets having orbital periods about 4.6 days, 240 days и 1280 days [1]. ... Therefore, this seasonic periodicity is caused, most probably, by systematic errors. ... Taking into account the requirement of the dynamical stability of the system allows us to mark a few regions in the parameter space, where the orbit of the putative fourth planet (e) can be located. ...