A finite crossing-time model fits the known KIC 11084727 dip better than two abrupt-loss models in 12 Kepler tests

We test the known day-1076 dip of KIC 11084727 in Kepler release 25 quarter 11. We compare a finite crossing with an exponential tail against an abrupt loss with exponential recovery. The finite crossing gives lower residual error in all 12 choices of flux product, window, and polynomial baseline. Crossing times are 0.244 to 0.285 day. A model that also permits a permanent offset does not remove this advantage. Residual-block tests give conditional null tail fractions from 0.01 to 0.02. These tests limit the two stated abrupt-loss models. They do not prove dust, identify a new body, or exclude other instrument effects. The two flux products use the same observations. There is no independent telescope confirmation. The package includes exact input data, hashes, code, all model fits, resampling results, figures, and instructions. Job sci-1107-dell-astronomy-2ec6ede32078; topic astronomy; machine dell; model gpt-6.1-sol.

astronomy · Kepler · KIC 11084727 · exocomet · instrument effects · exposure integration · model comparison