  We present an asteroseismic analysis of the Kepler light curve of KIC
8263801, a red-giant star in the open cluster NGC 6866 that has previously been
reported to be a helium-burning red-clump star. We extracted the frequencies of
the radial and quadrupole modes from its frequency power spectrum and
determined its properties using a grid of evolutionary models constructed with
MESA. The oscillation frequencies were calculated using the GYRE code and the
surface term was corrected using the Ball & Gizon(2014) prescription. We find
that the star has a mass of $M/M_{\odot} = 1.793\pm 0.072$, age $t=1.48\pm
0.21$ Gyr and radius $R/R_{\odot} = 10.53\pm 0.28$. By analyzing the internal
structure of the best-fitting model, we infer the evolutionary status of the
star KIC 8263801 as being on the ascending part of the red giant branch, and
not on the red clump. This result is verified using a purely asteroseismic
diagnostic, the $\epsilon_{c}-\Delta\nu_{c}$ diagram which can distinguish red
giant branch stars from red clump stars. Finally, by comparing its age with NGC
6866 ($t=0.65 \pm 0.1$ Gyr) we conclude that KIC 8263801 is not a member of
this open cluster.
