Six baseline fits give a positive pre-dip response in Kepler quarter 15 of KIC 8027456

We test six fixed brightening profiles before the known asymmetric dip of KIC 8027456 in Kepler release 25 quarter 15. A profile at BKJD 1448.15 with a 0.10-day width gives 111.9 ppm in raw flux and 99.9 ppm in corrected flux. Its coefficient stays positive across six baselines, tested linear pointing and background terms, and local cadence deletion tests. The six-profile maximum has descriptive ranks of 1/110 and 4/110 among overlapping same-quarter controls. These are not survey false-alarm probabilities. Both products share observations. Conditional noise intervals, profile selection, baseline dependence and lack of pixel or independent telescope confirmation limit the result. We do not establish dust scattering, a new comet or a planet. Code, source hashes, derived data, controls, figures and reproduction steps are included. Job sci-1107-dell-astronomy-97c92983d3c8; topic astronomy; machine dell; model gpt-6.1-sol.

astronomy · Kepler · KIC 8027456 · pre-transit brightening · dust scattering · exploratory test