\begin{table}%ta.2
%\centering
\par
  \caption {\label{tab:tab_2}{Orbital data for the Giant Planets and Pluto at JD~2~454~200.50 (\protect\url{http://ssd.jpl.nasa.gov/horizons.cgi}).}} 
  \begin{tabular}{cccccccc}
\hline\hline \multicolumn{1}{c}{{Name}} & \multicolumn{1}{c}{{$a$ (AU)}} & \multicolumn{1}{c}{{$e$}} & \multicolumn{1}{c}{{$i$ (deg)}} & \multicolumn{1}{c}{{$M$ (deg)}} &  {$\omega$ (deg)} &  {$\Omega$ (deg)} &  {$m$ ($M_\odot$)} \\
\hline
Jupiter &5.20219308  &0.04891224 &1.30376425 &240.35086842 &274.15634048 &100.50994468 &$9.5479194\times 10^{-4}$ \\  
Saturn  &9.54531447  &0.05409072 &2.48750693 &45.76754755  &339.60245769 &113.63306105 &$2.8586434\times 10^{-4}$ \\  
Uranus  &19.19247127 &0.04723911 &0.77193683 &171.41809349 &98.79773610  &73.98592654  &$4.3558485\times 10^{-5}$ \\  
Neptune &30.13430686 &0.00734566 &1.77045595 &293.26102612 &255.50375800 &131.78208581 &$5.1681860\times 10^{-5}$ \\  
Pluto   &39.80661969 &0.25440229 &17.121129  &24.680638    &114.393972   &110.324800   &$6.5607561\times 10^{-9}$ \\ \hline
\end{tabular}
\end{table}