RV and TESS photometric data for HD 17156. Top panel: all Keck/HIRES RV data, spanning a total period of ∼17 yr, along with the best-fit model after applying the EXOFAST fits described in Section 3.1. Middle panel: residuals from the best-fit model applied to the RV data. Bottom-left panel: RV data folded on the orbital period of the known planet. Bottom-right panel: transit fit from the EXOFAST analysis to the combined TESS photometry described in Section 2.1.2, where all five transits have been folded on the planetary orbital period.