\begin{table}%t1
\caption{\label{tab:obs}XMM-Newton observation log. The EPIC modes are Full Frame~(FF) and Timing~(TI).  In the March~17,~2003 observation
           \object{\src} was outside the OM~field of view. The effective
           wavelengths of the {\it UVW}1, {\it UVW}2 and {\it UVM}2 filters are~2945~\AA, 2180~\AA, and~2340~\AA, respectively.  }
%\centering
\par
\begin{tabular}{lccccccccc}
\hline
\hline 
Obs. & Start time & End time & \mc{2}{c}{Exposure (ks)} & \mc{3}{c}{EPIC 
mode} & \mc{2}{c}{OM} \\
    &     (UTC)  &   (UTC)  & pn &MOS                  &  pn & MOS1 & 
MOS2    & Exp (ks) & Filter\\
\hline
1 & 2003~Mar.~17~20:53 & Mar. 18~00:33 & 10.2 & 11.9 & FF  & FF & FF 
& \dots & \dots   \\
2 & 2003~Sep.~11~17:54 & Sep.~11~22:09 & 9.3  & 11.0 & FF  & FF 
& FF & 2.2, 3.2 & $B$, {\it UVW}1  \\
3 & 2003~Sep.~17~17:13 & Sep.~17~19:59 & 2.5  & 8.3  & TI  & TI 
    & FF & 1.8, 1.6 & {\it UVM}2, {\it UVW}2 \\
\hline
\end{tabular}
\end{table}