\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}