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Table 5.
Model parameters of the precessing nozzle model with a period of 25 yr for jet-B.
| Knot | t0 | ω(rad) | Γ | t0, VLBI | Reference |
|---|---|---|---|---|---|
| C5a | 1990.88 | 7.62 | 16–15 | 1990.88 ± 0.30 | Wehrle et al. (2001) |
| C6 | 1992.15 | 7.30 | 16–14 | 1992.09 ± 0.15 | Wehrle et al. (2001) |
| C7 | 1993.34 | 7.0 | 12–14 | 1993.26 ± 0.15 | Wehrle et al. (2001) |
| C17 | 2000.90 | 5.10 | 4–12 | 2000.96 ± 0.12 | Chatterjee et al. (2008) |
| C18 | 2001.36 | 4.98 | 5–8.5 | 2001.40 ± 0.16 | Chatterjee et al. (2008) |
| C19 | 2002.77 | 4.62 | 3–11.5 | 2002.97 ± 0.12 | Chatterjee et al. (2008) |
| C20 | 2003.29 | 4.50 | 4–11 | 2003.39 ± 0.10 | Chatterjee et al. (2008) |
| C27 | 2008.79 | 3.12 | 15–19 | 2008.79 ± 0.08 | Jorstad et al. (2017) |
| C28 | 2009.28 | 3.00 | 15–17 | 2009.28 ± 0.13 | Jorstad et al. (2017) |
| C29 | 2009.87 | 2.85 | 13–20 | 2009.87 ± 0.15 | Jorstad et al. (2017) |
| C30 | 2010.70 | 2.64 | 15–18 | 2010.70 ± 0.06 | Jorstad et al. (2017) |
| C31 | 2010.94 | 2.58 | 13–16 | 2010.94 ± 0.21 | Jorstad et al. (2017) |
| C32 | 2010.47 | 2.70 | 11–13 | 2010.47 ± 0.23 | Jorstad et al. (2017) |
Notes. The table lists: modeled ejection epoch t0, precession phase ω, Lorentz factor, and VLBI-measured ejection epoch t0, VLBI and references.
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