\begin{table}%t2
%\centering
\par
\caption{\label{t3}Astrophysical parameters of AO Mon.}
\begin{tabular}{lcc}
\hline\hline\noalign{\smallskip}
Parameter &  Unit &  Value \\
\hline\noalign{\smallskip}
$M_1$  & \ms & 5.5 (0.1)    \\
$M_2$  & \ms & 5.2 (0.1)    \\
$r_1$  &  -- & 0.25 (0.01)  \\
$r_2$  &  -- & 0.22 (0.01)  \\
$i$    & deg & 86.2 (0.6)   \\
Source &     & Giuricin et~al. (\cite{Giuricin1980}) \\
\noalign{\smallskip}
\hline\noalign{\smallskip}
$\dot{\omega}_{\rm rel}$  & deg $\:\rm{cycle^{-1}}$ & 0.00173 \\
$\dot{\omega}_{\rm rel} / \dot{\omega}$ & \%        & 3.2   \\
$\dot{\omega}_{\rm 3}$  & deg $\:\rm{cycle^{-1}}$ & 0.000125 \\
$\dot{\omega}_{\rm 3} / \dot{\omega}$ & \%        & 0.23     \\
$\log k_{\rm 2, obs}$  & -- & $-2.23$ (0.01) \\
$\log k_{\rm 2, theo}$ & -- & $-2.27$ (0.03) \\
\noalign{\smallskip}
\hline
\end{tabular}
\end{table}