TESS Sector 108 maps show similar pixel patterns at 10.03 and 11.36 hours near ZTF J0328−1219

A weak feature near 10.03 hours was reported near the white dwarf ZTF J0328−1219 in TESS Sector 108. Its spatial origin was not tested. We compare pixel fits at fixed periods of 10.0324 and 11.3604 hours from prior SCI work. This is a follow-up with the same photons, not an independent detection. We use 3,311 ten-minute bins from public calibrated images. A plane fitted to faint outer pixels removes local sky. A joint spline and harmonic model gives signed images for the two fundamentals. Their core image cosine is 0.983. Their signed centre separation is 0.155 pixel. Paired residual sign trials with 0.5, 1, and 2-day blocks give 95th percentile displacement radii of 0.151 to 0.189 pixel. An empirical shared-shape check gives null exceedance fractions of 0.328 to 0.585. These values assume fixed frequencies, extraction, sky mask, and independent sign-symmetric residual blocks. Changing the image radius or time sample affects the centre difference. The incomplete Sector 109 sample does not give a stable weak-feature location. The Sector 108 maps support similar central pixel patterns under the tested model. They do not establish a separate orbital clock, a unique source, or a new planet. The package contains original images, hashes, code, trial signs, figures, and numerical checks for reproduction.

white dwarfs · ZTF J0328-1219 · TESS · planetary debris · pixel localization · conditional residual maps · reproducible astronomy