the prominent components N-1 and S-1 along the nominal jet axis of $-16^\circ$ are $-2 \pm 5$ and $-3 \pm 2$ mas yr$^{-1}$, respectively. These motions correspond to inward motions of 28 and 42 km s$^{-1}$, respectively, and are not statistically significant. The weighted average radial motion of all the components is $5.0 \pm 2.5$ mas yr$^{-1}$, corresponding to $70 \pm 40$ km s$^{-1}$. We adopt a conservative 4-$\sigma$ upper limit on the proper motion of 160 km s$^{-1}$. This upper limit is not very stringent, but certainly indicates that the IRAS 16547-4247 lobes are not moving as fast as the knots observed in the jets associated with the massive young stars HH 80-81 and Cep A HW2, where velocities in the plane of the sky of $\sim$500 km s$^{-1}$ have been reported (Martí, Rodríguez, & Reipurth 1998; Curiel et al. 2006).

Proper Motions in the Direction Transverse to the Jet Axis
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The only components that show transverse motions to the nominal jet direction of $-16$ degrees above the 4-$\sigma$ level are N-1 and S-1 (see Table 2). These motions are $-13 \pm 3$ and $-16 \pm 2$ mas yr$^{-1}$, corresponding to clockwise transverse motions of $180 \pm 40$ 