  Aims: From observations of the K4III star Beta UMi we attempt to determine
whether oscillations or any other form of variability is present.
  Methods: A high-quality photometric time series of approximately 1000 days in
length obtained from the SMEI instrument on the Coriolis satellite is analysed.
Various statistical tests were performed to determine the significance of
features seen in the power density spectrum of the light curve.
  Results: Two oscillations with frequencies 2.44 and 2.92 microhertz have been
identified. We interpret these oscillations as consecutive overtones of an
acoustic spectrum, implying a large frequency spacing of 0.48 microhertz. Using
derived asteroseismic parameters in combination with known astrophysical
parameters, we estimate the mass of Beta UMi to be 1.3 +/- 0.3 solar masses.
Peaks of the oscillations in the power density spectrum show width, implying
that modes are stochastically excited and damped by convection. The mode
lifetime is estimated at 18 +/- 9 days.
