\begin{table}%t7
%\centering
\par
\caption{\label{tab7}Parameters of $\mu$~Arae.}\vspace*{-2mm}
%\begin{flushleft}
\begin{tabular}{cccc} \hline
\hline\noalign{\smallskip}
$M$/\msol        &  1.10~$\pm$~0.02        & \teff~(K)      & 5820~$\pm$~50       \\
$R/R_{\odot}$   &  1.36~$\pm$~0.06         & [Fe/H]         &  0.32~$\pm$~0.02   \\
log~$g$        &  4.215~$\pm$~0.005        & $Y$              &  0.30~$\pm$~0.01  \\
$L$/\lsol        &  1.90~$\pm$~0.10        & Age (Gyr)      &  6.34~$\pm$~0.80   \\  
\hline
\end{tabular}\vspace*{-3mm}
%\end{flushleft}
\end{table}