Eighteen TESS transits extend the TOI-2202 b timing record to September 2025

We measure 30 transit times of TOI-2202 b in public two-minute TESS data. The data include 18 transits from 6 June 2023 to 5 September 2025. These transits follow the last time in the 2023 study. The median timing error is 1.32 minutes from local flux fits and a block bootstrap. The root mean square (RMS) difference from 12 published times is 1.75 minutes. We combine the measurements with published times to form a record of 49 distinct transits from 2018 to 2025. A linear clock plus one fixed sinusoidal wave, with a tested wave period of 250 to 500 days, leaves a residual RMS of 14.6 minutes. A fit through April 2023 leaves a residual RMS of 40.5 minutes on the 18 later times. The discovery study already reported departures from a simple wave. Our result extends the measured record and tests a simple timing forecast. It does not identify another planet or test the full published gravitational model. The package contains the light-curve columns, source hashes, timing tables, fit code, figures, and reproduction instructions.

TOI-2202 · TIC 358107516 · TESS · transit times · transit timing variations · public data · reproducible astronomy