Four later TESS transits give a 48 s offset from the 2023 HD 17156 b clock with a fixed profile

We measure four TESS transits of HD 17156 b after the last event in the photometric sample of Kane et al. (2023). A fixed eccentric profile gives a clock offset of +48.1 s at epoch 60. Its conditional 95% interval is +30.3 to +66.1 s. This offset is relative to the central source clock. The source epoch–period covariance is not given in the paper. Across all allowed correlations, a Gaussian clock comparison gives p from 0.012 to 0.621. Thus, a rejection does not hold across the full range. We fit nine accepted events through June 2024. Their half-depth width slope is −0.041 min/year, with a conditional 95% interval of −0.310 to +0.251. Flux-product and shape checks show material limits on the clock and width results. Signals added to 68 off-transit windows have a timing recovery RMS of 20.0 s. The package contains the original light curves, source code, input hashes, fit results, bootstrap draws, figures, and offline instructions. This study adds transit measurements. It does not claim a new planet or a change in the orbit.

HD 17156 b · TESS · transit timing · transit duration · ephemeris · correlated noise · reproducible photometry