\begin{table}%t1 \caption{\label{tab:observ}Summary of the observations of XSS~J1227.} %\centerline { \begin{tabular}{l l l l r c} \hline\hline Telescope & Instrument & Date & UT (start) & Exposure time (s) & Net count rate ($\ctss$)\\ \hline \emph{XMM-Newton} & EPIC-pn & 2009 Jan. 5 & 16:09 & 30~002 & $2.86 \pm 0.01$ \\ & EPIC-MOS & & 15:46 & 31~504 & $0.97 \pm 0.04$ \\ % & RGS & & 05: & 26~706 & $0.038 \pm 0.001$ \\ & OM-U & & 15:56 & 13~298 & $6.35 \pm 0.04$ \\ & OM-UVM2 & & 20:05 & 13~296 & $0.36 \pm 0.01$ \\ & & & & & \\ \emph{INTEGRAL} & IBIS/ISGRI & & & $\sim$$750~000$ & $0.14\pm 0.05 $ \\ & & & & & \\ \emph{RXTE} & PCA & 2007 Nov. 28 & 16:13 & 6784 & $1.3\pm0.1$\\ & & 2007 Nov. 28 & 22:02 & 3616 & $2.6\pm0.1$ \\ & & 2007 Nov. 29 & 02:04 & 1168 & $1.4\pm0.2$\\ & & 2007 Nov. 29 & 04:35 & 22~832 & $1.43\pm0.05$\\ & & 2007 Nov. 29 & 12:06 & 14~416 & $1.28\pm0.07$\\ \hline\hline Telescope & Instrument & Date & UT (start) & Exposure time (s) & Number exposures\\ \hline & & & & & \\ \emph{REM} & ROSS-V & 2009 Mar. 18 & 05:46 & 60 & 93 \\ & ROSS-V & 2009 Mar. 19 & 05:54 & 60 & 175 \\ & ROSS-V & 2009 Mar. 20 & 05:54 & 60 & 185 \\ & REMIR-J & 2009 Mar. 18 & 05:47 & 75 & 30 \\ & REMIR-J & 2009 Mar. 19 & 05:54 & 75 & 75\\ & REMIR-J & 2009 Mar. 20 & 05:54 & 75 & 83 \\ & & & & & \\ \emph{CASLEO} & B & 2008 Jul. 7 & 00:28 & 30 & 158\\ \hline \end{tabular}} \tablefoot{$^{*}$ Net exposure times except for the \emph{INTEGRAL} observations.} \end{table}