Five conditional TOI-1136 c transit fits in TESS sector 75 fall outside masks with a stated full width of 6.54 hours

We test the transit masks stated in a prior study for TOI-1136 c in TESS sector 75. We fit public 2 minute SPOC light curves with local baseline and transit models. We release five conditional transit times for epochs 264 to 268. The fitted centers occur 8.41 to 9.91 hours after the stated mask centers. The mask clock uses T0 = 2458688.7211 BJD TDB and P = 6.25725 days. We treat the stated 6.54 hour mask window as a full width. With a transit duration of 3.27 hours, none of the five fitted transits overlaps its mask. This result holds across seven tested fit choices. The tests change the flux product, baseline, and template duration. The smallest gap from a mask edge to a fitted transit contact is 3.28 hours. A repeat fit to 21 earlier c transits agrees with 20 published times within twice the combined formal errors. One fit selects a nearby dip. Three sector 75 events overlap planet b, one lacks egress data, and one has low signal strength. A scan that includes the old masks finds a competing dip for one event. The times depend on the known planet labels and adopted shapes. The study measures the mask geometry and supplies a reproducible conditional timing record. It does not prove the cause of the prior software failure or test an additional planet. The package contains the raw products, source code, source hashes, fit results, and figures.

TOI-1136 · TESS · transit timing · transit masks · public data · reproducible astronomy