Tau Ceti e
>> A 2021 study was unable to confirm this planet.
In general, peak1 is a free fantasy of Vasyan on the topic. The names of the planets are not approved by the IAU and were invented by Vasyan himself. The characteristics of none of the four (instead of the nine Vasyan planets) are confirmed by observations. The planetology of tau whales boils down to "well, there's something shorter, but what exactly we don't know.".