\begin{table}%T5
\caption{Stellar parameters of three close B3V stars, alpha~Ara,\protect 
alpha~Eri and eta~UMa.} \label{tab:compB3}
%\centerline
{
\begin{tabular}{lccc}
\hline \hline
& Alpha~Ara &  Alpha~Eri & Eta~UMa\\
\hline
%
$V$ &  2.9 &  0.5 &1.7\\
Dist.$^{i}$ &  74.3 $\pm$ 6~pc &  44.1 $\pm$ 1.4~pc&  30.9 $\pm$ 0.7~pc\\
$v \sin i$& 270~km~s$^{-1}$& 225~km~s$^{-1}$ & 150~km~s$^{-1}$\\
$B-V$ &  $-0.17$&$-0.17$ & $-0.17$\\
$V-K^{ii}$ & 0.4 & $-0.4$ & $-0.5$\\
$R_{\rm eq}$$^{iii}$& 4.8~$R_\odot$ & 12~$\pm$~0.4~$R_\odot$& 4.8~$R_\odot$\\
$R_{\rm pol}$$^{iii}$& 4.8~$R_\odot$ & 7.7~$\pm$~0.2~$R_\odot$& 4.8~$R_\odot$\\
\hline
\end{tabular}}
\medskip
\par
$^{i}$ Hipparcos distance.\\
$^{ii}$ From 2MASS photometry.\\
$^{iii}$ 4.8 is the statistical value for this B3V
star, the radius for
alpha~Eri is from Domiciano~de~Souza et~al. (2003).
\end{table}