\begin{table}%t2
\caption{\label{t2}Results of polarimetric V-band observations of 21 Lutetia.} 
%\centering
\par
\begin{tabular}{c r c c c c c c c}        
\hline\hline\noalign{\smallskip}                 
Date &  $\alpha$   & $P$  & $\sigma_P$ & $\Theta$ & $\sigma_\Theta$ & $P_{r}$ & $\Theta$$_{r}$ & Tel.\\   
UT      & (deg)  &   (\%)   &   (\%)  & (deg)  & (deg)  & (\%) &  (deg) & \\
\hline                
2004 10 17.96&	 8.75&	1.37&	0.09&	80.8&	1.9&	--1.36&	87.0&	1	\\
2006 04 06.79&  17.38&	0.81&	0.07&	97.0&	2.0&	--0.72&	78.1&	2 \\
2008 10 31.30&	14.80&	1.28&	0.02&	93.0&	0.5&	--1.25&	97.0&	3\\
2008 11 04.25&	13.10&	1.31&	0.02&	90.9&	0.4&	--1.29&	94.8&	3\\
\hline
\end{tabular}
\tablefoot{1. 1.25 m, Crimea. 2. 1.82 m, Asiago. 3. 2.15 m, Casleo.}\vspace*{3.5mm}
\end{table}