Three TOI-3724.01 dips have fitted offsets below 5 arcsec from the target reference in all 40 tested models per sector

Do the three TOI-3724.01 dips come from a common sky region? We fit public TESS full-frame image cutouts from sectors 19, 59, and 73. We use fixed event shapes from a prior study. A fit to each pixel gives the lost-light image. We fit one pixel response function to this image and compare its position with a fitted target reference in the same sector. The main offsets are 0.747, 0.757, and 0.897 arcsec. Each sector has 40 distinct tested model settings. All fitted offsets stay below 5 arcsec. This supports a common unresolved region under the tested image models. It is not a 5 arcsec confidence bound. Tests at 82 control times give 738 artificial signals. A nearest-star rule gives 26 wrong labels in 164 injections of the target and a Gaia star 1.73 arcsec away. These dependent test counts are not host probabilities. We also make 4500 residual block draws. Large reference-image residuals show that model errors limit the position accuracy. The close pair remains unresolved. The work does not identify the physical host or confirm a planet. The package preserves exact analysis arrays, public data records, code, fitted images, all tests, figures, and offline reproduction instructions.

TOI-3724.01 · TIC 143642240 · TESS · difference imaging · source position · pixel response function · Gaia DR3 · exoplanet candidates · artificial signal tests · unresolved stars