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Table 2:

Results from different methods of period analysis of the long-term photometry.
Method $P_{\rm phot}$ [d] $\sigma$ [d]
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
Adopted value 308.8 2.5

Notes. 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.


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