\begin{table}%t2
%\centering
\par
\caption{\label{param}Parameters used for the \HI\space modeling and derived quantities.}
\begin{tabular}{ll} 
\hline \hline 
\noalign{\smallskip}
$\dot{M}$ (in atomic hydrogen)           & $1 \times 10^{-7}$  
                                        $M_{\odot}$ yr$^{-1}$ \\ 
$M$ (in atomic hydrogen)                   & $2.45 \times 10^{-2}~M_{\odot}$ \\ 
Age                               & $2.45 \times 10^{5}$ years\\ 
PA                                & 135$^{\circ}$\\
$r_1$	              & $3.5 \times 10^{-3}$ pc (0.10$'$)\\ 
$r_2$ ($\theta = 0^{\circ}$)      & 0.46 pc (13$'$)\\ 
$r_2$ ($\theta = 180^{\circ}$)    & 1.06 pc (30$'$)\\ 
$a$                                 & 0.37 s$^{-1}$\\
$b$                                 & 0.19 s$^{-1}$\\
$v_{\rm exp}$		  & 7.5 \kms\\ 
$v_2$ ($\theta = 0^{\circ}$)      & 0.28 \kms\\ 
$v_2$ ($\theta = 180^{\circ}$)    & 2.1 \kms\\ 
$T_1$	              & 1800 K\\ 
$T_2$	              & 200 K\\ 
\hline 
\end{tabular} 
\end{table}