Combined data from 28 TESS sectors show a half-period flux dip for TOI-2251 in two flux products

We test whether a previously reported half-period dip for TOI-2251.01 remains under a local flux measurement. We use 30 public two-minute TESS light curves from 2020 to 2024. Coverage rules retain 55 events in 28 sectors. Each sector receives equal weight. The mean core flux loss is 536 ppm in simple-aperture flux and 436 ppm in corrected flux. The 95% sector bootstrap intervals are 346–739 ppm and 302–560 ppm. The means remain positive under two other time windows, removal of any one sector, and circular blocks of adjacent available sectors. Both products use the same photons. A control measurement at phase 0.85 is also positive, so these tests do not establish an eclipse or a companion class. Separate primary difference images from seven events in sectors 24, 74, and 75 put their mean centers within 1.85 arcseconds of the target and at least 72.77 arcseconds from the named neighbor TIC 229715770. The primary location does not locate the weaker half-period dip. The SPOC pipeline had already reported a similar dip and a primary source near the target. The contribution is the stated test across sectors and products, its limits, and a compact lossless data set. Source hashes, catalog snapshots, code, figures, and instructions permit inspection and reproduction. No new planet or companion mass is claimed.

TESS · TOI-2251 · TIC 229715760 · photometry · secondary eclipse · difference imaging · planet candidates · reproducible data