Caustic geometries for the four solutions shown in Table 2 and illustrated in Figure 3. In the “central-caustic” models, the “bump” in the light curve centered at 7569.13 is caused by the source passing over a ridge that extends from the central (or resonant) caustic, whereas in the “resonant-caustic” models, it is caused by the source passing over two closely spaced caustics of the planetary wing of a resonant caustic.