  We present 6 and 20 cm JVLA/VLA observations of the northern head of the HH
80/81/80N jet, one of the largest collimated jet systems known so far, aimed to
look for knots further away than HH 80N, the northern head of the jet. Aligned
with the jet and 10 arcmin northeast of HH 80N, we found a radio source not
reported before, with a negative spectral index similar to that HH 80, HH 81
and HH 80N. The fit of a precessing jet model to the knots of the HH 80/81/80N
jet, including the new source, shows that the position of this source is close
to the jet path resulting from the modeling. If the new source belongs to the
HH 80/81/80N jet, its derived size and dynamical age are 18.4 pc and >9000 yr,
respectively. If the jet is symmetric, its southern lobe would expand beyond
the cloud edge resulting in an asymmetric appearance of the jet. Based on the
updated dynamical age, we speculate on the possibility that the HH 80/81/80N
jet triggered the star formation observed in a dense core found ahead of HH
80N, which shows signposts of interaction with the jet. These results indicate
that pc scale radio jets can play a role on the stability of dense clumps and
the regulation of star formation in the molecular cloud.
