\begin{table}%t4 \caption{\label{tab:lcfit}Results of the light curve modelling process. } \par %\centerline {\begin{tabular}{lccc} \hline\hline Quantity & Value & Formal & Adopted \\ \ & & uncertainty & uncertainty \\ \hline Reference time (HJD) & 2454821.68051 & 0.00002 & 0.0002 \\ Orbital period (d) & 0.18591324 & \mc{(fixed)} \\ Orbital inclination ($^\circ$)& 81.3 & 0.8 & 2.0 \\ Mass ratio & 0.51 & 0.04 & 0.08 \\ Disc radius ($a$) & 0.189 & 0.015 & 0.05 \\ White dwarf radius ($a$) & 0.0110 & 0.0013 & 0.003 \\ Secondary star radius ($a$) & 0.322 & 0.006 & 0.010 \\ \hline \end{tabular}} \par \smallskip The formal uncertainties come from the MCMC analysis and the adoped uncertainties are increased to account for several additional sources of uncertainty. Several parameters are given in units of $a$, the \reff{orbital} semimajor axis.\end{table}