\begin{table}%t2
%\centering
\par
\caption{\label{mod_phot}M~2-29 photoionization and kinematic model parameters.} 
\begin{tabular}{ll}
\hline\hline
\noalign{\smallskip}
Parameter & Value \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
Distance &  8 kpc \\
$T_{\rm eff}$ &  70~000~K \\
Luminosity  &  1200 $L_{\odot}$  \\
Ionized mass  &  0.38 $M_{\odot}$ \\
$\log$ He/H + 12 & 10.99 \\
$\log$ N/H + 12 & 7.14 \\
$\log$ O/H + 12 & 7.44\tablefootmark{*} \\
$\log$ Ne/H + 12 & 6.84 \\
$\log$ S/H + 12 & 5.64 \\
Nebula expansion velocity & 12~km~s$^{-1}$ \\
Turbulent velocity component & 7~km~s$^{-1}$ \\
Kinematic age & 5000~yr \\
\hline\end{tabular} 
\par
\tablefoot{\tablefoottext{*}\mbox{This} adopted value might be too low (see the text).}
\end{table}