\begin{table}%t3 \caption{\label{tab:tmin}Times of minimum light for \baur\ compared to the calculated values for our chosen model fit. Times are given in HJD $-$ 2~400~000.} \small%\centerline $${ \begin{tabular}{r r@{~$\pm$~}l c c l} \hline \hline Orbital cycle & \multicolumn{2}{c}{Observed time} & Calculated time & $\rm O{-}C$ & Reference \\ \hline $-$8790.0 & 19~018.3848 & 0.0046 & 19~018.38497 & $-$0.00017 & \citet{Stebbins11apj} \\ $-$4289.0 & 36~842.5537 & 0.0013 & 36~842.55528 & $-$0.00158 & \citet{Johansen71aa} \\ $-$4085.0 & 37~650.4025 & 0.0011 & 37~650.40481 & $-$0.00231 & \citet{Johansen71aa} \\ $-$3719.0 & 39~099.785 & 0.0011 & 39~099.78191 & $+$0.00309 & \citet{Johansen71aa} \\ $-$1030.0 & 49~748.353 & 0.0023 & 49~748.34755 & $+$0.00545 & \citet{JohansenSorensen97ibvs} \\ $-$855.0 & 50~441.3552 & 0.0035 & 50~441.35573 & $-$0.00053 & \citet{JohansenSorensen97ibvs} \\[2pt] 0.0~$^*$ & 53~827.19586 & 0.00045 & 53~827.19567~$^*$ & $+$0.00019 & This work \\ 0.5~$^*$ & 53~829.17566 & 0.00047 & 53~829.17570~$^*$ & $-$0.00004 & This work \\ 1.0~$^*$ & 53~831.15541 & 0.00054 & 53~831.15572~$^*$ & $-$0.00031 & This work \\ 1.5~$^*$ & 53~833.13593 & 0.00029 & 53~833.13574~$^*$ & $+$0.00019 & This work \\ 2.0~$^*$ & 53~835.11562 & 0.00032 & 53~835.11577~$^*$ & $-$0.00015 & This work \\ 2.5~$^*$ & 53~837.09603 & 0.00042 & 53~837.09579~$^*$ & $+$0.00024 & This work \\ 3.0~$^*$ & 53~839.07576 & 0.00019 & 53~839.07581~$^*$ & $-$0.00005 & This work \\ 3.5~$^*$ & 53~841.05571 & 0.00047 & 53~841.05584~$^*$ & $-$0.00013 & This work \\ 4.0~$^*$ & 53~843.03598 & 0.00024 & 53~843.03586~$^*$ & $+$0.00012 & This work \\ 4.5~$^*$ & 53~845.01563 & 0.00037 & 53~845.01588~$^*$ & $-$0.00025 & This work \\ \hline \end{tabular}} $$ \smallskip $^*$ Note that the times measured from the \wire\ data are expected to be affected by systematic errors (see Sect.~\ref{sec:lc:tmin}) and were not included in the fit. They are repeated here for completeness and for the interested reader. \end{table}