Fixed circular fits support a WASP-111 b optical eclipse in combined TESS data from 2020 to 2025

We test whether later public TESS data support the marginal optical eclipse of the known planet WASP-111 b. We fit fixed circular eclipse templates and local quadratic baselines to five 120-second SPOC light curves. The 32 accepted eclipses in sectors 28, 68, 92, and 95 give a combined depth of 122.6 ± 22.6 parts per million (ppm) with independent reported errors. A sector-based exponential Gaussian noise fit gives 116.8 ± 23.9 ppm, conditional on fitted noise parameters. A four-sector cluster t sensitivity interval is 59.7 to 185.6 ppm. The later-minus-2018 depth is −18.4 ± 46.2 ppm with reported independent errors; no change is resolved. All tested flux, baseline, window, timing, and duration choices give positive later depths from 94.6 to 138.0 ppm. An exact Gaussian test uses the real sampling times and independent reported errors. For 60-minute blocks, the square root of the expected variance estimate is only 0.865 times the true standard error. Thus, its nominal interval cannot supply a general detection significance. The data support an eclipse under the stated noise and geometry assumptions. The package preserves the original FITS files, queries, hashes, source code, event selection, results, figures, and an offline reproduction check.

WASP-111 b · TESS · secondary eclipse · public data · correlated noise · uncertainty calibration · reproducible astronomy