Best-fit adjustment to the differences between the observed times of minima of AN Dor and the linear ephemerides O − C_linear for i = 80°. The orange and pink symbols show the eclipses by the primary and secondary stars, respectively. Data prior to 2010 are taken from the ASAS survey, and data after 2018 are taken from TESS photometry. The long and short dashed lines yield our best-fit theoretical relations for the times of minima. In this plot, the linear ephemerides are T₀ = 2 460 204.6031 and P^sd = 2.0326782 d.