\begin{table}%t1
%\centering
\par
\caption{\label{phy}Basic physical parameters of \hd.}
\begin{tabular}{ll}
\hline
\hline
\te           & $7250\pm 150~\rm K $ \\
\lgg          & $4.2\pm 0.1$ \\
$M$             & $1.63~M_{\odot}$ \\ 
$L/L_{\odot}$ & $0.91\pm 0.04$ \\
$P_{\rm rot}({\rm d})$     & $12.45877\pm(16) $ \\
$P_{\rm puls}$    & $\simeq$$ 6.15~{\rm min}  $ \\
\vs & 5.6 \kms\\
\hline
\end{tabular}
\end{table}