Constraints on the intrinsic jet velocity β^′ and the inclination angle θ based on the average measured apparent speed β_app = 4.5 for the leading components B 1–B 4 of feature B. Two estimates for the jet-to-counterjet flux-density ratio S₁ ∕S₂ define further constraints drawn as blue lines. The blue-shaded region highlights the allowed parameter space, and the thick lines with corresponding arrows define the lower and upper limits on the jet speed and the inclination angle.