\begin{table}%t1
\caption{\label{tab:obs}Log of recent soft X-ray observations of LMC~X-1 with good S/N. (Instruments not considered here are in parenthesis.)}
%\centering
\small
\begin{tabular}{ccccccccc}
  \hline\hline\noalign{\smallskip}
  Obs. & Start date & Start date & Exposure & ${\phi_{\rm orb}^{(\rm T3)}}$\tablefootmark{\dagger} & ${\phi_{\rm orb}^{(\rm F9)}}$\tablefootmark{\ddagger} & Satellite & ObsID & Instruments \\
       &            & (MJD)      & (ks)     \\
  \hline
  C1   & 2000-01-16 & 51559.2    & 19       & 0.45--0.51 & 0.50--0.56 & \textit{Chandra} & 93          & HETGS                   \\
  X1   & 2000-10-21 & 51838.7    & 5--7     & 0.94--0.96 & 0.98--0.01 & \textit{XMM}     & 0112900101  & PN, RGS~1+2, (MOS~1+2)\\
  X2   & 2002-09-26 & 52543.2    & 35       & 0.17--0.28 & 0.21--0.32 & \textit{XMM}     & 0023940401  & RGS~1+2, (MOS~1+2)    \\
  S1   & 2007-10-31 & 54404.7    & 2.4      & 0.37--0.42 & 0.37--0.43 & \textit{Swift}   & 00037079001 & (BAT), XRT/PC, (UVOT)   \\
  S2   & 2007-12-06 & 54440.4    & 9.8      & 0.49--0.61 & 0.50--0.62 & \textit{Swift}   & 00037079002 & (BAT), XRT/WT, (UVOT)   \\
  S3   & 2007-12-10 & 54444.1    & 4.4      & 0.43--0.50 & 0.43--0.50 & \textit{Swift}   & 00037079003 & (BAT), XRT/WT, (UVOT)   \\
\hline
\end{tabular}
\tablefoot{\tablefoottext{\dagger}{Orbital phase calculated from the ephemeris of \citet[Table~\ref{tab:NH}]{Orosz2009}: $T_0={\rm MJD}\;53~390.8436$, $P=3.90917$~d;}
\tablefoottext{\ddagger}{orbital phase calculated from the ephemeris of \citet[Fig.~9]{Orosz2009}: $T_0={\rm MJD}\;53~390.75174$, $P=3.9094$~d.}}
\end{table}