We present high-speed, three-colour photometry of the eclipsing dwarf nova KIS
J192748.53+444724.5 (KISJ1927) which is located in the Kepler field. Our data reveal
sharp features corresponding to the eclipses of the accreting white dwarf followed by the
bright spot where the gas stream joins the accretion disc. We determine the system parameters
via a parametrized model of the eclipse fitted to the observed light curve. We obtain
a mass ratio of q = 0.570 ± 0.011 and an orbital inclination of 84.
◦6 ± 0.
◦3. The primary
mass is Mw = 0.69 ± 0.07 M. The donor star’s mass and radius are found to be
Md = 0.39 ± 0.04 M and Rd = 0.43 ± 0.01 R, respectively. From the fluxes of the white
dwarf eclipse, we find a white dwarf temperature of Tw = 23000 ± 3000 K, and a photometric
distance to the system of 1600 ± 200 pc, neglecting the effects of interstellar reddening. The
white dwarf temperature in KISJ1927 implies the white dwarf is accreting at an average rate
of M˙ = 1.4 ± 0.8 × 10−9 M yr−1, in agreement with estimates of the secular mass loss rate
from the donor
