\begin{table}%t3
  \caption{\label{t_geometrical}The parameters of the geometrical model.}
  %\centerline
{\small
  \begin{tabular}{llrc}
    \hline\hline
%   \multicolumn{2}{l|}{Parameter}              &         \\ \hline
    Parameter		 	& Unit		&  Value  \\ \hline
	Ring major axis		& [mas]		& 57 \\
	Major axis PA		& [$\degr$]	& 105\tablefootmark{a} \\
	Ratio minor/major axis  &		& 0.32 \\
	Fractional ring width		& 		& 0.31 \\
	Ring effective temperature	& [K]		& 1000 \\
	Envelope major axis {\it FWHM}& [mas]		& 350 \\
	Major axis PA & [$\degr$]	& 105\tablefootmark{a} \\
	Ratio minor/major axis &		& 0.86 \\
	Envelope eff. temperature & [K]		& 140 \\ 
	\hline
  \end{tabular}}
\tablefoot{\tablefoottext{a}{Forced to be the same value.}}
\end{table}