TTVs are derived from Q1-Q16 Kepler data.  x-axes: “Observed Tc” (Mid-Transit Time): EXOFAST’s best-fits from Kepler light flux vs. time data.  y-axes: “(O – C)”: difference between Observed Tc and the Calculated Tc from the graphically obtained linear ephemeris.

Discussion:
The observed sinusoidal TTV suggests the presence of another unseen (non-transiting) exoplanet in this system.


KOI-2933.01, P = 119.08 days [Plot error bars = ± 15.57 min.]
TTV_minimum: 264.47 ± 31.39 days, Amp_ttv_minimum: -51.09 ± 12.39 min.
TTV_maximum: 488.34 ± 34.69 days, Amp_ttv_maximum: 54.02 ± 12.39 min.
TTV_minimum: 712.21 ± 39.38 days, Amp_ttv_minimum: -51.09 ± 12.39 min.
TTV_maximum: 936.07 ± 45.03 days, Amp_ttv_maximum: 54.02 ± 12.39 min.
TTV_minimum: 1159.94 ± 51.32 days, Amp_ttv_minimum: -51.09 ± 12.39 min.
TTV_maximum: 1383.81 ± 58.05 days, Amp_ttv_maximum: 54.02 ± 12.39 min.
P_ttv: 447.73 ± 16.10 days.
Amp_ttv: 105.11 ± 17.52 minutes.
Lomb-Scargle periodogram, candidate P_ttv: 447.24 days; Power: 4.24; P-value: 0.00648.
Linear ephemeris (this work): Tc = 119.07886092(Tc#) + 96.60331129


17 Oct 2013
Kepler KOI-2933.01 (KIC-12416987) 2-(or more?)-Planet System

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