\begin{table}%t2
\caption{\label{tab:periods}
Results from different methods of period analysis of the long-term photometry.}
%\centerline
{\begin{tabular}{lrr}\hline\hline
Method  & $P_{\rm phot}$ [d] & $\sigma$ [d] \\ \hline
Period04 & 308.99 & -- \\
DFT & 308.76 & 3.36 \\
CLEAN & 308.77 & 4.00 \\
Lomb-Scargle & 308.91 & 2.04 \\
Lafler-Kinman & 308.57 & 3.19 \\
MSL & 310.12 & 5.05 \\
PDM & 309.81 & 7.39 \\ \hline
Adopted value & 308.8 & 2.5 \\
\hline
\end{tabular}}
\par
\tablefoot{The period has been found by a Gaussian fit to the peak, except for Period04 which uses a sinusoidal fit. 
The $\sigma$ is the error on the fitted peak position.}
\end{table}