Fit of a precessing twin jet model (red receding; blue approaching) using the Table 2 parameters based on the mathematical morphology skeleton that yields . The fit is overlayed onto false-color maps of the 1992, 1993, 1994, 1997, and 2000 VLA data sets. The horizontal bar gives the angular scale in arcseconds, and the vertical bar illustrates the brightness scale in Jy beam^-1. The restoring beam used is shown at the bottom right corner. North is up and east is left. (Movie.)