\begin{table}
\begin{table}%t1
\par
\caption {\label{table:tab1}Fit parameters for extended-source point-lens models with Parallax and Xallarap.}
%\centerline
 {\begin{tabular}{l r r r}
\hline
\hline
\multicolumn{1}{c}{Parameters} & \multicolumn{1}{c}{Without} & \multicolumn{1}{c}{Xallarap} &  \multicolumn{1}{c}{Xallarap}\\
\multicolumn{1}{c}{   } & \multicolumn{1}{c}{xallarap} & \multicolumn{1}{c}{Black hole} & \multicolumn{1}{c}{Solar mass}\\
\multicolumn{1}{c}{   } & \multicolumn{1}{c}{   } & \multicolumn{1}{c}{$P = 290$ days} & \multicolumn{1}{c}{$P = 170$ days}\\
\hline
\normalsize{$\chi^2$} &  1760.5 &  1717.7 &  1728.1\\
\hline 
\normalsize{$t_0~~\rm (days)$}  & 4221.9726 &  4221.9725 & 4221.9725\\
\normalsize{$\sigma_{t_0}~~\rm (days)$} & 0.0001 &  0.0001 & 0.0001\\
\normalsize{$u_0$} &  0.00204 & 0.00215 &  0.00214\\
\normalsize{$\sigma_{u_0}$} &  0.00002 &  0.00003 &  0.00003 \\
\normalsize{$t_{\rm E}~~\rm (days)$}  & 68.09 &  64.96 &  65.11 \\
\normalsize{$\sigma_{t_{\rm E}}~~\rm (days)$} & 0.66 &  0.75 &  0.75 \\
\normalsize{$\rho_*$} &  0.00450 &  0.00473 &  0.00471 \\
\normalsize{$\sigma_{\rho_*}$} & 0.00004 & 0.00006 &  0.00006 \\
\normalsize{$\pi_{\rm E}$} &  0.12 &  2.33 &  0.94 \\
\normalsize{$\sigma_{\pi_{\rm E}}$} & 0.03 & 0.07 &  0.10\\
\normalsize{$\xi_{\rm E}$} &  / & 1.00 & 0.17 \\
\normalsize{$\sigma_{\xi_{\rm E}}$} &  / & 0.06 &  0.07\\
\hline
\end{tabular}}
\par
{Note}: three different models: 1/ with orbital parallax effects only, 2/ with orbital parallax + xallarap (black-hole source companion), 3/ with orbital parallax + xallarap (solar-mass source companion).
\end{table}