RV curves of TIC 322208686 with fitted models. The blue, green, and cyan circles are the RV measurements for the primary (A), secondary (B), and third (C) components, respectively. The red solid curves represent the results of the W–D binary model, and the dotted line denotes the average RV of −13.86 km s⁻¹ for the third component. The lower panel shows the residuals between observations and models.