Relative proper motions of VLBI components with respect to the brightest hotspot NE1. The proper motions of the VLBI components are determined by linear fits to the separations as a function of time. The angular separation rate is calculated as μ(J1) = −0.034 ± 0.001 mas yr^-1, μ(SW1) = 0.027 ± 0.002 mas yr^-1, and μ(SW2) = 0.022 ± 0.002 mas yr^-1. The hotspot NE2 does not show significant proper motion.