Model fitting of the kinematics for knot g: trajectory Zn-Xn, core separation rn(t), coordinates Xn(t) and Zn(t), the modeled apparent velocity/viewing angle and Lorentz/Doppler factor. Its ejection time is assumed to be t0 = 1998.85 (BQS17). Two curvatures in its trajectory at Z = 2.0 mas (rn = 0.036 mas) and Z = 25 mas (rn = 0.62 mas) are introduced.
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