\begin{table}%ta1
%%\centering

\par
\caption{\label{optlog}Optical observing log.} 
\tiny \begin{tabular}{ccccccccc} 
\hline \hline \noalign{\smallskip}
JD+2450000 & Obs.\tablefootmark{a} & $V$ [mag] & JD+2450000 & Obs. & $R$ [mag] &  JD+2450000 & Obs. & $I$ [mag] \\ 
\hline
4803.640&W&13.64&4803.635 &  W  &  12.34  &  4803.661   &  W  &  11.12 \\
4809.513   &  W  &  13.70  &  4809.517  &  W  &  12.34  &  4809.519   &  W  &  11.07 \\
4809.534   &  W  &  13.59  &  4809.538  &  W  &  12.31  &  4809.540   &  W  &  11.07 \\
4813.484   &  W  &  13.59  &  4813.489  &  W  &  12.13  &  4813.491   &  W  &  11.03 \\
4813.506   &  W  &  13.77  &  4813.589  &  W  &  12.26  &  4813.591   &  W  &  11.06 \\
4813.585   &  W  &  13.49  &  4817.416  &  T  &  12.32  &  4817.418   &  T  &  11.10 \\
4817.414   &  T  &  13.66  &  4817.468  &  T  &  12.32  &  4817.469   &  T  &  11.11 \\
4817.466   &  T  &  13.67  &  4817.503  &  T  &  12.33  &  4817.504   &  T  &  11.10 \\
4817.501   &  T  &  13.67  &  4817.558  &  T  &  12.33  &  4817.560   &  T  &  11.20 \\
4817.557   &  T  &  13.68  &  4817.682  &  T  &  12.34  &  4817.683   &  T  &  11.11 \\
4817.680   &  T  &  13.67  &  4826.476  &  W  &  12.19  &  4826.472   &  W  &  10.99 \\
4826.480   &  W  &  13.37  &  4826.640  &  W  &  12.18  &  4826.473   &  W  &  11.02 \\
4826.632   &  W  &  13.51  &  4826.645  &  W  &  12.19  &  4826.651   &  W  &  11.06 \\
4826.812   &  W  &  13.57  &  4826.805  &  W  &  12.29  &  4826.801   &  W  &  11.12 \\
4828.451   &  T  &  13.53  &  4828.454  &  T  &  12.19  &  4828.455   &  T  &  11.00 \\
4828.522   &  T  &  13.52  &  4828.523  &  T  &  12.17  &  4828.524   &  T  &  11.00 \\
4828.591   &  T  &  13.49  &  4828.592  &  T  &  12.15  &  4828.593   &  T  &  10.98 \\
4829.414   &  T  &  13.47  &  4829.415  &  T  &  12.17  &  4829.430   &  T  &  10.99 \\
4829.427   &  T  &  13.49  &  4829.429  &  T  &  12.18  &  4829.459   &  W  &  11.05 \\
4829.464   &  W  &  13.54  &  4829.462  &  W  &  12.18  &  4829.470   &  T  &  11.01 \\
4829.468   &  T  &  13.53  &  4829.469  &  T  &  12.21  &  4829.471   &  W  &  11.02 \\
4829.502   &  W  &  13.51  &  4829.479  &  W  &  12.31  &  4829.505   &  W  &  11.06 \\
4829.506   &  T  &  13.55  &  4829.507  &  T  &  12.23  &  4829.508   &  T  &  11.02 \\
4829.513   &  W  &  13.66  &  4829.508  &  W  &  12.29  &  4829.547   &  T  &  11.03 \\
4829.521   &  W  &  13.64  &  4829.525  &  W  &  12.23  &  4829.548   &  W  &  11.06 \\
4829.543   &  W  &  13.69  &  4829.527  &  W  &  12.28  &  4829.560   &  W  &  11.09 \\
4829.544   &  T  &  13.57  &  4829.546  &  W  &  12.31  &  4829.591   &  W  &  11.09 \\
4829.555   &  W  &  13.54  &  4829.546  &  T  &  12.24  &  4829.596   &  T  &  11.00 \\
4829.585   &  W  &  13.67  &  4829.558  &  W  &  12.29  &  4829.604   &  W  &  11.08 \\
4829.593   &  T  &  13.52  &  4829.589  &  W  &  12.32  &  4829.613   &  W  &  11.09 \\
4829.599   &  W  &  13.65  &  4829.595  &  T  &  12.22  &  4829.635   &  W  &  11.08 \\
4829.607   &  W  &  13.68  &  4829.603  &  W  &  12.32  &  4829.667   &  W  &  11.07 \\
4829.629   &  W  &  13.69  &  4829.611  &  W  &  12.30  &  4829.707   &  W  &  11.06 \\
4829.661   &  W  &  13.67  &  4829.633  &  W  &  12.30  &  4829.728   &  W  &  11.11 \\
4829.702   &  W  &  13.79  &  4829.665  &  W  &  12.31  &  4829.756   &  W  &  11.11 \\
4829.722   &  W  &  13.68  &  4829.726  &  W  &  12.32  &  4829.794   &  W  &  11.11 \\
4829.798   &  W  &  13.69  &  4829.753  &  W  &  12.32  &  4831.440   &  W  &  11.10 \\
4831.448   &  W  &  13.77  &  4829.796  &  W  &  12.32  &  4831.463   &  W  &  11.08 \\
4831.468   &  W  &  13.75  &  4831.444  &  W  &  12.31  &  4831.479   &  W  &  11.11 \\
4831.485   &  W  &  13.67  &  4831.465  &  W  &  12.33  &  4831.488   &  W  &  11.11 \\
4831.493   &  W  &  13.70  &  4831.481  &  W  &  12.33  &  4831.502   &  W  &  11.10 \\
4831.508   &  W  &  13.68  &  4831.489  &  W  &  12.31  &  4834.461   &  T  &  11.07 \\
4834.454   &  T  &  13.62  &  4831.504  &  W  &  12.32  &  4834.536   &  T  &  11.08 \\
4834.529   &  T  &  13.62  &  4834.458  &  T  &  12.29  &  4834.603   &  T  &  11.07 \\
4834.596   &  T  &  13.67  &  4834.533  &  T  &  12.29  &  4834.661   &  T  &  11.08 \\
4834.654   &  T  &  13.61  &  4834.600  &  T  &  12.30  &  4836.390   &  T  &  11.10 \\
4836.396   &  T  &  13.69  &  4834.658  &  T  &  12.30  &  4836.398   &  T  &  11.10 \\
4836.404   &  T  &  13.68  &  4836.393  &  T  &  12.34  &  4836.407   &  T  &  11.10 \\
4836.413   &  T  &  13.69  &  4836.401  &  T  &  12.34  &  4836.519   &  T  &  11.09 \\
4836.525   &  T  &  13.67  &  4836.410  &  T  &  12.34  &  4836.528   &  T  &  11.09 \\
4836.534   &  T  &  13.66  &  4836.522  &  T  &  12.33  &  4836.536   &  T  &  11.09 \\
4836.542   &  T  &  13.67  &  4836.530  &  T  &  12.33  &  4842.375   &  T  &  11.00 \\
4842.369   &  T  &  13.49  &  4836.539  &  T  &  12.32  &  4842.387   &  T  &  11.00 \\
4842.380   &  T  &  13.46  &  4842.372  &  T  &  12.17  &  4842.517   &  T  &  10.96 \\
4842.510   &  T  &  13.34  &  4842.384  &  T  &  12.15  &  4842.527   &  T  &  10.96 \\
4842.520   &  T  &  13.34  &  4842.513  &  T  &  12.08  &  5208.351   &  T  &  10.91 \\
5208.360   &  T  &  13.30  &  4842.523	&  T  &  12.08  &  5208.474   &  T  &  10.91 \\
5208.482   &  T  &  13.31  &  5208.357  &  T  &  12.04  &  5208.592   &  T  &  10.90 \\ 
5208.597   &  T  &  13.31  &  5208.480  &  T  &  12.05  &  5210.532   &  T  &  11.06 \\ 
5210.540   &  T  &  13.61  &  5208.596  &  T  &  12.07  &  5210.542   &  T  &  11.06 \\ 
5210.550   &  T  &  13.61  &  5210.537  &  T  &  12.32  &  5210.553   &  T  &  11.06 \\ 
5210.560   &  T  &  13.62  &  5210.547  &  T  &  12.31  &  5210.563   &  T  &  11.06 \\
5210.571   &  T  &  13.62  &  5210.558  &  T  &  12.31  &&&\\ 
&&&  5210.568  &  T  &  12.31  &&&\\ 
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{To indicate the Teide Observatory IAC-80 telescope in the Canary Islands (Spain) we use a ``T'', and for the 
Wellesley~0.6-m telescope at Wellesley College in Wellesley, Massachusetts~(USA) we use a ``W''.}}
\end{table}