\begin{table}%T2
\caption{\label{tab:observationallg}Observational log. For each night, the number of observations is
given for each filter~$U$, $B$ and~$I$. Also the heliocentric ($r_{\rm h}$) and geocentric
($\Delta$) distances are given (in AU, at 0:00~UT), together with the
correction factor $f_{\rm a}$ (see Eq.~(\ref{eqn:fa}) in Sect.~\ref{sect:distancecrrctn}).}
\small%\centering
\par
\begin{tabular}{ccccccc}
\hline\hline
\multicolumn{7}{c}{Observational log}\\
%\hline
            & $n(U)$ & $n(B)$ & $n(I)$ & $r_{\rm h}$ & $\Delta$ & $f_{\rm a}$\\
\hline
2005-Jan.-08 & 5 & 5 & 5 &1.2337 & 0.3485 & 1.00\\
2005-Jan.-09 & 9 & 9 & 9 &1.2305 & 0.3500 & 1.00\\
2005-Jan.-10 &10& 9 & 8 &1.2274 & 0.3520 & 1.01\\
2005-Jan.-11 & 8 & 9 & 8 &1.2245 & 0.3546 & 1.02\\
2005-Jan.-12 & 8 & 8 & 8 &1.2219 & 0.3577 & 1.03\\
2005-Jan.-13 & 8 & 8 & 8 &1.2194 & 0.3613 & 1.05\\
2005-Jan.-14 & 6 & 6 & 6 &1.2171 & 0.3654 & 1.07\\
2005-Jan.-15 & 5 & 5 & 5 &1.2150 & 0.3699 & 1.09\\
\hline
\end{tabular}
\end{table}