Table 1
Proper motions measured in IC 1396, tangential velocities for a distance of 910 pc, and 3D velocities for the knots whose radial velocity is known.
| μx | μy | vx | vy | vt | PA(a) | vr | vtot(c) | i(c) | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Knot | Id. (d) | (mas yr−1) | (mas yr−1) | (km s−1) | (km s−1) | (km s−1) | (deg) | (km s−1) | (kms−1) | (deg) |
| D1 | N-red | −4.23 ± 1.65 | 3.46 ± 1.25 | −18.2 ± 7.1 | 14.9 ± 5.4 | 23.6 ± 6.5 | 51 ± 14 | … | … | … |
| D2 | N-red | −2.64 ± 1.42 | 0.90 ± 0.68 | −11.4 ± 6.1 | 3.9 ± 2.9 | 12.1 ± 5.9 | 71 ± 14 | … | … | … |
| C1 | N-blue | 8.68 ± 9.30 | 2.90 ± 2.54 | 37.5 ± 40.1 | 12.5 ± 10.9 | 39.5 ± 38.2 | −72 ± 24 | … | … | … |
| C3 | N-blue | 11.00 ± 4.70 | −2.39 ± 2.51 | 47.4 ± 20.3 | −10.3 ± 10.8 | 48.6 ± 19.9 | −102±14 | … | … | … |
| C4 | N-blue | −3.86 ± 3.26 | −4.87 ± 5.28 | -16.6 ± 14.1 | −21.0 ± 22.8 | 26.8 ± 19.9 | 142 ± 39 | … | … | … |
| C5 | N-blue | 2.27 ± 1.06 | −2.28 ± 1.29 | 9.8 ± 4.6 | −9.8 ± 5.6 | 13.9 ± 5.1 | −135 ± 23 | … | … | … |
| F1 | S-red | −1.26 ± 0.92 | 2.02 ± 0.70 | −5.4 ± 4.0 | 8.7 ± 3.0 | 10.3 ± 3.3 | 32 ± 20 | 9 ± 28 | 14 ± 19 | 41 ± 89 |
| F2-3 | S-red | −2.73 ± 1.09 | −5.47 ± 1.22 | −11.8 ± 4.7 | −23.6 ± 5.3 | 26.4 ± 5.2 | 154 ± 11 | −11 ± 28 | 29 ± 12 | −23 ± 52 |
| F4 | S-red | −4.95 ± 2.87 | 0.84 ± 1.51 | −21.4 ± 12.4 | 3.6 ± 6.5 | 21.7 ± 12.2 | 80 ± 17 | −33 ± 28 | 39 ± 24 | −57 ± 27 |
| F5 | S-red | −4.78 ± 3.26 | 0.64 ± 1.23 | −20.6 ± 14.1 | 2.8 ± 5.3 | 20.8 ± 14.0 | 82 ± 14 | 4 ± 28 | 21 ± 15 | 11 ± 75 |
| T | S-blue | 6.15 ± 1.32 | 2.46 ± 0.90 | 26.5 ± 5.7 | 10. ± 3.9 | 28.6 ± 5.5 | −68 ± 8 | … | … | … |
| C2 | S-blue | 9.66 ± 3.39 | 6.92 ± 2.86 | 41.7 ± 14.6 | 29.8 ± 12.4 | 51.3 ± 13.9 | −54 ± 15 | … | … | … |
| C6 | N-post | −4.29 ± 2.68 | 3.83 ± 1.94 | −18.5 ± 11.6 | 16.5 ± 8.4 | 24.8 ± 10.3 | 48 ± 24 | −47 ± 23 | 53 ± 21 | −62 ± 15 |
| C7 | N-post | 7.06 ± 2.52 | −3.28 ± 0.95 | 30.4 ± 10.9 | −14.1 ± 4.1 | 33.6 ± 10.0 | −115±10 | … | … | … |
| C9 | N-post | −1.18 ± 1.43 | 0.49 ± 0.86 | −5.1 ± 6.2 | 2.1 ± 3.7 | 5.5 ± 5.9 | 67 ± 43 | … | … | … |
| C8 | S-post | 2.15 ± 1.58 | 1.91 ± 1.26 | 9.3 ± 6.8 | 8.2 ± 5.4 | 12.4 ± 6.3 | −48 ± 28 | −25 ± 23 | 28 ± 21 | −64 ± 24 |
| C10 | S-post | 6.45 ± 2.37 | 1.68 ± 0.90 | 27.8 ± 10.2 | 7.3 ± 3.9 | 28.7 ± 10.0 | −75 ± 9 | −43 ± 23 | 52 ± 20 | −56 ± 17 |
| C11 | S-post | 1.39 ± 1.25 | −1.22 ± 1.03 | 6.0 ± 5.4 | −5.3 ± 4.4 | 8.0 ± 5.0 | −132 ± 35 | … | … | … |
| C12 | S-post | 0.83 ± 0.76 | 0.83 ± 0.96 | 3.6 ± 3.3 | 3.6 ± 4.1 | 5.1 ± 3.7 | −45 ± 41 | … | … | … |
| C13 | S-post | 2.02 ± 0.80 | 1.84 ± 1.10 | 8.7 ± 3.4 | 8.0 ± 4.7 | 11.8 ± 4.1 | −48 ± 20 | … | … | … |
| C14 | S-post | 8.11 ± 2.07 | −0.41 ± 0.75 | 35.0 ± 9.0 | −1.8 ± 3.3 | 35.0 ± 8.9 | −93 ± 6 | −8 ± 23 | 36 ± 10 | −13 ± 36 |
| C15 | S-post | 3.77 ± 3.43 | 1.40 ± 1.32 | 16.2 ± 14.8 | 6.0 ± 5.7 | 17.3 ± 14.0 | −70 ± 25 | … | … | … |
| C16 | S-post | 2.86 ± 0.65 | 1.98 ± 0.63 | 12.3 ± 2.8 | 8.5 ± 2.7 | 15.0 ± 2.8 | −55 ± 10 | −10 ± 23 | 18 ± 13 | −35 ± 62 |
| C17 | S-post | 5.39 ± 2.51 | 1.62 ± 1.05 | 23.3 ± 10.8 | 7.0 ± 4.5 | 24.3 ± 10.4 | −73 ± 13 | … | … | … |
Notes. (a)Tangential velocity and position angle, eastward from North. (b)Radial velocity from Massi et al. (2022); the errors quoted are the random plus systematic errors. (c)3D velocity; i is the inclination angle with respect to the plane of the sky, positive away from the observer. (d)Identification of the knot: outflow (N or S), and lobe, red, blue, or post-collision.
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