Eleven Kepler DR25 timing matches that involve candidates and lack ephemeris flags fall within two phase-control ranges

We test whether Kepler DR25 planet candidates share predicted event times with signals on other stars more often than phase controls predict. We use 8,006 catalog signals, including 4,026 candidates, with periods up to 493 days. We test period ratios of 1, 2 and 3 over BKJD 120 to 1600. Event times must agree within one quarter of the shorter catalog duration for at least three slow events. We find 5,520 matched pairs. Of 77 pairs that involve a candidate, 66 include an existing ephemeris-contamination flag. The remaining 11 fall within the central 95 percent ranges of two phase controls, each 3 to 14 pairs. Upper-tail probabilities are 0.172 and 0.180. Two pairs join two candidates, compared with control means near 2.8. A separate event enumeration gives the same counts. The known flagged population gives a strong positive control. This test finds no aggregate excess among the unflagged candidate pairs. It does not clear any individual signal, test all period aliases, or establish a new planet. One catalog supplies all observations. We provide code, aggregate results, a figure, source hashes and a retrieval recipe. External catalog records and record-level match tables are excluded from the bundle.

astronomy · Kepler DR25 · ephemeris matching · phase controls · null result