2nd best solution that we obtained from the original 6 transits. It is a Jupiter-mass planet just inside the 5:2 resonance (P2/P1$=$2.437) which explains large TTVs. The parameters are very well constrained, including the inclination. With inclination this large, TDVs can be substantial, but I did not have time to look into this in a more detail. Will do it asap.

Solution 2: mass$=$0.0002107 Msun, sema$=$0.2346 AU, ecc$=$0.01224

This is a planet 1/5 Jupiter mass near the 5:3 resonance (P2/P1=1.696). The ultimate test of this could be TDVs as this solution has smaller inclination than solution 1, and should produce smaller TDV amplitude. All this has to be checked with the new TDV data.

Yes, this was a critical assessment: TDVs of the 2nd solution should be smaller. Given that no TDVs were detected for KOI-872, the first solution can be ruled out because it generates TDVs in excess of the measurement errors.

By the way, my statement that “the 5:2 resonance ... explains large TTVs” is incorrect. In fact, the large variations come from the 2:1 short-period term and are a consequence of the relatively large companion mass.

[**From David K’s email on 1/16/2012:**]{}

Awesome! I have more good 