Both AS Cam eclipse types in TESS sector 52 occur early relative to their linear clocks from sectors 19 and 73

We measured 50 eclipse times for AS Camelopardalis from five public TESS light curves. We used fixed empirical eclipse templates and tested seven reduction choices. For each eclipse type, we compared the sector 52 mean with the straight line through sectors 19 and 73. The primary contrast is -220 seconds. The secondary contrast is -152 seconds. Their mean is -186 seconds, with a conditional sampling error of 17 seconds. The mean contrast stays between -186 and -194 seconds across the tested reductions. A published 805.9-day light travel time curve fits the ten visit and eclipse type means when its phase and size are free. Its fitted projected time scale is 265 seconds. The residual root mean square falls from 72 seconds for separate linear clocks to 15 seconds. A common cubic curve gives 19 seconds. Thus these visits show a shared timing change under the tested template models. They do not select a unique outer period or establish a new companion. The package contains the input products, 50 measured times, source code, source records, figures, and recovery checks.

AS Camelopardalis · TESS · eclipsing binary · eclipse timing · light travel time · reproducible photometry