  We analyze the charmonium states by testing a phenomenological
nonrelativistic potential and propose a new set of parameters. This new set of
parameters are fixed using only the lowest lying S-wave states of charmonia
where the spin-orbit and tensor interactions will not contribute. After fitting
the parameters we analyze the whole fine structure of charmonium states taking
into account the spin-orbit and tensor interactions too. Calculations showed
that the nonrelativistic potential model with the phenomenologically defined
parameters is indeed well approximation for describing the charmonium states.
