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Motivated by the previously reported high orbital decay rate of the planetWASP-43b, eight newly transit light curves are obtained and presented. Togetherwith other data in literature, we perform a self-consistent timing analysiswith data covering a timescale of 1849 epochs. The results give an orbitaldecay rate dP/dt = -0.02890795\pm 0.00772547 sec/year, which is one ordersmaller than previous values. This slow decay rate corresponds to a normallyassumed theoretical value of stellar tidal dissipation factor. In addition,through the frequency analysis, the transit timing variations presented hereare unlikely to be periodic, but could be signals of a slow orbital decay.

The Possible Orbital Decay and Transit Timing Variations of the Planet WASP-43b