Flux density and radial core separation evolution of jet components within 0.2 mas of the core in OJ 287 at 22, 43, and 86 GHz from September 2015 to April 2017. Top panel: Flux density evolution over time, showing the core (red circles), a knot identified as B15 at 43 GHz and K at 86 GHz (green square and yellow triangle, respectively), and components C1 (magenta diamond) and C2 (purple cross) identified in this work at 22 GHz. Error bars indicate measurement uncertainties. Bottom panel: Radial core separation projected distances. A TeV flare (dashed cyan vertical line) and the centenary optical flare (dashed gray vertical line) are marked. The dashed red vertical line and the gray shaded region show the estimated ejection time and its uncertainty for knot B15 or K (Weaver et al. 2022).