Two models from earlier data give positive fitted depths for TOI-1216.01 in TESS sectors 88–98

We tested a known 4.554-day dimming signal in TOI-1216.01 (TIC 141527965). We used 43 public TESS SPOC light curves. Two trapezoid models fit to sectors through 69 gave similar residual sums but different outer durations. Their widths at half depth were 7.06 ± 0.45 and 7.35 ± 0.69 hours. We held each period and shape fixed in sectors 88–98, from 2025 January to 2026 January. The later fitted depths were 145 ± 40 and 134 ± 62 parts per million. Errors include sector variation and local propagation of the earlier shape error. They assume independent sectors and independent earlier and later errors. Both estimates are positive, but the second gives weaker evidence. Processing changes and removal of any one later sector kept positive depths for the first model. Under a circular, central transit model, the catalogue star permits a maximum total duration of about 2.2 hours. Both fitted widths exceed that limit. A prior catalogue study had flagged this duration conflict. The later data do not independently measure the width in this test. The analysis was exploratory. It does not give a calibrated false alarm rate, a source location, or a planet validation. We preserve lossless column subsets, archive hashes, source code, results, figures, and reproduction instructions.

TESS · TOI-1216.01 · TIC 141527965 · transit duration · candidate vetting · light curves · model uncertainty · public astronomical data