TESS sectors 105 and 106 show no event above the tested transit threshold in HD 20794

This study tests a new transit window for the 647.6-day radial-velocity planet of HD 20794. The planet is called d in Nari et al. (2025) and f in the NASA Exoplanet Archive. We search public SPOC 120-second light curves from TESS sectors 105 and 106. We fit single events with durations from 6 to 30 hours and a local linear baseline. No event reaches the specified score of 8. The largest score is 5.003. We add 13,482 model transits to the measured light-curve product. The tests use 321 event times from BTJD 4190 to 4270, seven radii, three durations, and two impact parameters. At the archive nominal epoch, all six models with radius 1.3 Earth radii are recovered. For radius 1.7 Earth radii, all six shapes are recovered at 140 of the 321 tested times. Gaps leave many other times untested. The recovery table gives a result at each tested time and model. Its fractions count fixed grid points; they are not transit probabilities. The result assumes a fixed stellar radius and limb-darkening law. The tests do not measure signal loss in upstream SPOC processing. The publication includes the seven original sector products, file hashes, archive responses, source code, numerical checks, figures, and reproduction instructions.

HD 20794 · TESS · transit search · radial velocity planet · injection recovery · time coverage · public astronomical data