We analyse the fifth roAp star reported in the Kepler field , KIC 7582608 , discovered with the SuperWASP project .
The object shows a high frequency pulsation at 181.7324 d ^ { -1 } ( P = 7.9 min ) with an amplitude of 1.45 mmag , and low frequency rotational modulation corresponding to a period of 20.4339 d with an amplitude of 7.64 mmag .
Spectral analysis confirms the Ap nature of the target , with characteristic lines of Eu ii , Nd iii and Pr iii present .
The spectra are not greatly affected by broadening , which is consistent with the long rotational period found from photometry .
From our spectral observations we derive a lower limit on the mean magnetic field modulus of \langle B \rangle = 3.05 \pm 0.23 kG .
Long Cadence Kepler observations show a frequency quintuplet split by the rotational period of the star , typical for an oblique pulsator .
We suggest the star is a quadrupole pulsator with a geometry such that i \sim 66 ^ { \circ } and \beta \sim 33 ^ { \circ } .
We detect frequency variations of the pulsation in both the WASP and Kepler data sets on many time scales .
Linear , non-adiabatic stability modelling allows us to constrain a region on the HR diagram where the pulsations are unstable , an area consistent with observations .