Diagram showing the class of orbits consistent with the measured astrometry for HD 206893B (blue orbits) and HD 206893c (red orbits). The HD 206893B astrometry comes from astrometry obtained in Milli et al. (2017), Delorme et al. (2017), Grandjean et al. (2019a), Stolker et al. (2020), and Ward-Duong et al. (2021), as well as the recent GRAVITY detections. The right panels are magnifications (50−100x) of portions of the orbits, highlighting the ∼50−100 microarcsecond astrometric precision.