TTVs are derived from Q1-Q17 Kepler data. x-axes: “Observed Tc” (Mid-Transit Time): EXOFAST’s best-fits from Normalized PDCSAP_FLUX Kepler light flux vs. time (BJD_tdb - 2454900) data. y-axes: “(O-C)”: difference between Observed Tc and the Calculated Tc from the graphically obtained linear ephemeris.
References: • Numerous literature and major Tc#, Tc, and TTV tabulation references can be found on my "Summary" webpage following the table.
6 Mar 2015
Kepler KOI-952 (Kepler-32; KIC-9787239) 5-(or more?)-Planet System
KOI-952.02 (Kepler-32c), the 4th planet from the star in this tightly compact system, showed a clear TTV from its Lomb-Scargle Periodogram and Sinusoidal Fit; scatter, as seen in the following plot, was significant. No significant TTV was observed for 952.01 or 952.03. Neither 952.04 nor 952.05 were evaluated since their (LC-recorded) transits were quite weak.