Fitted TOI-3258.01 eclipse positions differ between TESS sectors 65 and 93 under fixed image models

We tested the source position and eclipse times of TOI-3258.01 with public TESS pixel data from sectors 65, 66, and 93. The 55 complete event windows were observed in 2023 and 2025, after a 2022 report that listed this target as a background-binary case. The central-hour loss is about 0.24 percent of the aperture light. We fit the eclipse loss images with a pixel response model and a coordinate shift from the median image. A position projection is zero at the assigned target and one at a nearby Gaia binary. The main projections are 1.233, 1.058, and -0.164 for the three sectors. Their 95 percent event-resampling ranges are 0.478 to 2.205, 0.375 to 1.956, and -0.521 to 0.222. The difference between sectors 65 and 93 remains under the nine tested image models. Sector 66 depends more on the model. A joint fit to all 55 events gives a period of 1.22797336 days with an event-resampling standard deviation of 0.00000311 days. The period error holds each sector shape, event weights, and baseline form fixed. The image ranges exclude response error, coordinate error, and error in the median-image reference. These fits do not establish a stable host position across sectors. They do not show real source motion or a new planet. The earlier binary evidence remains. We provide retained TESS values, source hashes and queries, code, event images, fitted results, and four figures.

TESS · TOI-3258.01 · TIC 369789627 · eclipsing binaries · difference images · pixel response function · source position · eclipse times · model checks