 It was initially called "P4", meaning the fourth Plutonian moon to be discovered.The convention for naming Plutonian moons is to use names associated with the god Pluto in classical mythology.To decide on names for P4 and P5, Mark Showalter and the SETI Institute, on behalf of the discovery team, conducted a non-binding Internet poll in 2013, in which the general public was invited to vote for their favorite names.