\begin{table}%t1
%\centering
\par
\caption{Observed and calculated physical and dynamical characteristics of
the ellipsoidal stellar wind bubble surrounding 3C~434.1.\label{param}}
\begin{tabular}{cc}
\hline\hline
Parameter&
Value\\
\hline
Geometric Centre ($\ell _{0},b_{0}$)&
93.961$\degr $, 1.123$\degr $\\
Systemic velocity $v_{\rm sys}$&
$-$79 km s$^{-1}$\\
Distance&
$5.2\pm 1.1$ kpc\\
Size (semimajor, semiminor axes)&
$36\pm 7$ pc, $29\pm 6$ pc\\
Mean Thickness of Shell&
$3.1\pm 0.6$ pc\\
Expansion Velocity $v_{\rm e}$&
$14 \pm 3$ km s$^{-1}$\\
\ion{H}{i} density within shell $n$&
$12.9 \pm 2$ cm$^{-3}$\\
Local ISM \ion{H}{i} density $n_{0}$&
$4.6 \pm 1$ cm$^{-3}$\\
\ion{H}{i} mass within shell $M_{\rm shell}$ &
$14~500 \pm 2500$~$M_{\odot}$\\
Kinetic energy of shell $E_{\rm k}$&
$2.8 \pm 0.5 \times 10^{49}$~ergs\\
\hline
\end{tabular}
\end{table}