Transit Time Variations (TTVs) of WASP-43

However, there is a negative difference between the transit timings derived from TESS data in two sectors (9 and 35) and a hint of an orbital period decrease in the entire data set. Both findings are statistically insignificant due to the short baseline of observations, which prevents us from drawing firm conclusions about the orbital decay of this ultra-short-period planet. However, assuming the effect of this decrease of the period in the planet's orbit, we derive a lower limit for the reduced tidal quality factor as Q*'>(4.01{+/-}1.15)x10^5^ from the best-fitting quadratic function.

Finally, we calculate a probable rotational period for this system as 7.52days from the out-of-transit flux variation in the TESS light curves due to spot modulation.