\begin{table}%t8
%\centering
\par
\caption{Solar oblateness and the PPN parameter $\beta$ determinations based on INPOP06 fit to observations. In the first column, the publications from where the values are extracted and the methods used to estimate the Sun 
J2 and the PPN parameters $\beta$ are given. In Cols.~2, 3 and 4, computed values of these parameters can be found.}
\label{tabbetagamma}
\begin{tabular}{l l l}
\hline\hline
&  Sun J2&  $|\beta -1|$ \\
& $10^{-7}$& $10^{-5}$ \\
\hline
This paper & &   \\
INPOP06 & 2.46   & $<$1   \\
INPOP06 &  2.97 $\pm$ 0.40 & $<$10  \\
\\
(Pitjeva 2005) & & \\
EMP2004 &  1.9 $\pm$ 0.3 & (0 $\pm$ 10)   \\
(Pitjeva 2006) & & \\
EMP2006 &  2 $\pm$ 0.5 & $<$20 \\
\\
(Will 2006)  & &  \\
%\small{Cassini   tracking}& &  &  (2.1 $\pm$ 2.3) \\
%VLBI & & &  (0 $\pm$ 40) \\
\small{Heliosismology} & 2.2 $\pm$ 0.1  & (0 $\pm$ 300)
\\
\hline
\end{tabular}
\end{table}