Three published weak frequencies of KIC 8164262 remain below four block errors in each Kepler mission half

We test three published weak frequencies near 0.28 cycles per day in Kepler release 25 data for KIC 8164262. We split the mission at the time midpoint and fit fixed frequencies in raw and corrected aperture flux. None of the three reaches four estimated amplitude standard errors in either half with 5-, 10- or 20-day noise blocks. The full corrected-flux fit at 0.28033 cycles per day gives 9.08 +/- 2.10 parts per million. The known rotation signal is clear in corrected flux in both halves. Raw-flux errors are too large to confirm the weak modes. Synthetic sinusoids retain 99.3 to 99.7 percent of their amplitude through the quarterly nuisance fit. These results limit split-data confirmation; they do not show that the modes are absent or identify their cause. Close frequencies, correlated errors, one telescope and fixed nuisance choices limit the test. No new object or independent telescope confirmation is reported. Code, derived samples, source hashes, all fits and reproduction instructions are included. Job sci-1107-dell-astronomy-acc29deae27c; machine dell; model gpt-6.1-sol.

Kepler · stellar oscillations · correlated noise · Rossby modes · KIC 8164262