Five Kepler passages do not match a fixed 1000 ppm dip for nine aliases of the proposed KIC 8462852 period

We test periods of 928.25/n days for integer n from 2 to 10. These periods connect the two shallow dips reported for KIC 8462852. Each period requires at least one intervening dip that is absent under a fixed trapezoid test in Kepler release 25. The nine tests use five distinct passages. Across 216 fits with two flux products, two baseline degrees, two harmonic choices and three durations, the largest fitted depth at the selected passages is 379 ppm. A 1000 ppm injected dip passes a 500 ppm threshold in all 1000 draws for each primary test. Other noise block sizes give recovery rates of at least 98.1 percent. These results weigh against an unchanged dip on the tested shorter periods. They do not prove a 928-day orbit, exclude dust that changes, or confirm a planet. The passage selection is exploratory. The noise ranges are conditional diagnostics. Both flux products share exposures. No independent telescope confirms this result.

astronomy · KIC 8462852 · Kepler · orbital aliases · dust · injection recovery