\begin{table}%t3
\caption{\label{om}XMM/OM photometry. }
%\centerline
{
\begin{tabular}{ccccc}
  \hline\hline
  \noalign{\smallskip}
  Date & Filter &  Countrate  & Brightness$^{(1)}$ & flux$^{(1)}$ \\
              &         & cts~s$^{-1}$  & mag & erg cm$^2$ s$^{-1}$ \AA$^{-1}$ \\
  \noalign{\smallskip}
  \hline
  \noalign{\smallskip}
    2000-07-25 & {\it UVW1} & 201.4    &$11.41 \pm 0.01$& 1.04E--13 \\
               & {\it UVW2} & ~16.0    &$11.62 \pm 0.01$& 1.24E--13 \\
    2000-08-28 & $V$    & ~10.6        &$15.24 \pm 0.02$& 3.05E--15 \\
    2001-03-29 & $U $   & ~~9.5        &$15.70 \pm 0.02$& 2.24E--15 \\
  \hline
  \end{tabular}}
\smallskip
(1) Brightness and flux are given without correction for 
  galactic, LMC and nova-intrinsic extinction, since the latter two~values have uncertainties much larger than the measurement error.
\end{table}