Transit times and durations of three KOIs

For KOI-319 and KOI-884, the observed Transit Timing Variations (TTVs) of the inner transiting planet are used to detect an outer non-transiting planet. The outer planet in KOI-884 is =~2.6 Jupiter masses and has the orbital period just narrow of the 3:1 resonance with the inner planet (orbital period ratio 2.93).

The distribution of parameters inferred from KOI-319.01's TTVs is bimodal with either a =~1.6 Neptune-mass (M_N_) planet wide of the 5:3 resonance (period 80.1 days) or a =~1 Saturn-mass planet wide of the 7:3 resonance (period 109.2 days). The radial velocity measurements can be used in this case to determine which of these parameter modes is correct. KOI-227.01's TTVs with large =~10 hr amplitude can be obtained for planetary-mass companions in various major resonances.