Local TESS image fits place three TIC 25194908 dimmings near the bright source

We tested whether the nearest resolved Gaia star could cause four known TESS dimmings in TIC 25194908. We fit local dimming images in sectors 3, 28, 65, and 90. We used Gaussian and mission response models, shifted residual noise, and artificial source tests. The nominal Gaussian positions are 0.60, 1.33, 1.81, and 0.48 arcseconds from the bright reference image. The nearby star is 9.6 to 9.7 arcseconds away. Sectors 3, 28, and 90 support the bright source under the tested models. Sector 65 gives a weak source limit. In the other three sectors, no nearby-star injection reaches the observed position component toward that star. The finite shift ranges are conditional noise tests, not calibrated confidence limits. The results narrow one resolved-source explanation for a reported timing mismatch. They do not confirm a planet or establish that all four events have one source. The package preserves the pixel windows, source records, code, maps, controls, and reproduction instructions.

TESS · TIC 25194908 · transit candidates · difference images · source localization · residual shifts · Gaia DR3 · reproducible astronomy