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Table 2

Proper motion measurements of the 31 brightest knots in the jets.

Name α4 (2000) δ4 (2000) PM12 PA12 PM23 PA23 PM13 PA13 PM24 PA24 PM34 PA34 PM14 PA14
h deg mas/yr deg mas/yr deg mas/yr deg mas/yr deg mas/yr deg mas/yr deg
MHO ±0.06′′ ±0.06′′ ±10 ±28 ±7 ±15 ±35 ±6
2235-M5 18:28:59.296 0:29:13.32 92 340±18 77 170±25
2235-M4 18:28:59.666 0:29:12.89 36 350±16 39 4±11 22 8±16
2235-M1 18:28:59.730 0:29:10.95
2235-M2 18:28:59.826 0:29:10.24
2235-I1 18:29:01.722 0:29:24.28 13 199±26
2235-I2 18:29:01.732 0:29:21.97 24 221±24 23 195±19 68 168±13 108 178±18 37 186±9
2235-I3 18:29:01.746 0:29:26.29 23 324±25 69 89±23 16 32± 26 13 341±27
2235-K 18:29:01.953 0:29:04.37 68 306±9 41 300± 11 61 158±15 91 164±21 24 273±15
2235-F2 18:29:03.676 0:29:56.20 53 194±11 128 269±13 58 29± 7 42 251±21 74 113±26 43 213±8
2235-F1 18:29:03.843 0:29:59.87 79 179± 24
2235-E 18:29:04.928 0:30:15.12 91 235±6 113 164±14 82 214±5 113 198±8 158 228±13 95 218±3
2235-D 18:29:05.406 0:30:21.11 24 162±24 89 36±18 19 83±22 78 178±25 20 127±17
2235-C1 18:29:05.997 0:30:22.06 48 230±12 43 242±10 28 235±13
2235-A1 18:29:06.655 0:30:30.95 34 170±17 28 167±15 27 167±13
2235-A2 18:29:06.761 0:30:34.05
2235-B 18:29:06.934 0:30:24.77 15 146± 27 13 133±26
2234-H8 18:29:07.922 0:30:24.86 33 312±18 67 88±24 17 0±25 18 334± 20
2234-H3 18:29:08.153 0:30:31.95 23 212±25 61 136±26 26 175±16 13 167±26
2234-G1 18:29:08.235 0:30:47.98 41 207±14 130 350±13 21 291±20 119 169±17 19 219±19
2234-H1 18:29:08.363 0:30:32.56 51 194±12 42 186±10 36 188±10
2234-H5 18:29:08.469 0:30:39.93
2234-H2 18:29:08.498 0:30:35.59 16 149±26
2234-C 18:29:08.609 0:31:13.50 27 5±22 125 189±13 34 186±25 76 12±25
2234-E 18:29:08.610 0:31:07.55 23 200±25 106 207±15 45 204±10 144 18±14
2234-H4 18:29:08.610 0:30:38.89 38 214±16 67 90±24 23 175±19 39 92±23 19 173±18
2234-D1+2 18:29:08.810 0:31:08.38 74 168±8 88 183±18 77 173±5 56 167±6
2234-B1 18:29:09.009 0:31:22.08 52 179±11 149 203±11 76 191±6 70 198±13 58 188±6
2234-A1 18:29:09.045 0:31:28.10
2234-A2 18:29:09.057 0:31:26.64 71 180±8 116 197±14 82 186±5 46 190±19 61 183±6
2234-I1 18:29:09.570 0:32:07.53 37 35±24 70 54±27 19 63±19
2233-N 18:29:11.560 0:31:20.05 23 100±25 36 14±24 21 56±17
2233-P 18:29:12.443 0:31:46.19 23 125±25 57 316±16

Notes.The J2000 coordinates of the knots are measured in epoch 4 (2013) and are accurate to ~0.06′′. The proper motions (PMij) are measured in mas/yr for six different baselines and listed only for PMs larger than 2σ. The sub-indices ij give the motion from epoch i to epoch j, where epoch 1 is 2003, epoch 2 is 2009, epoch 3 is 2011, and epoch 4 is 2013. The proper motion position angles (PAij) indicate the direction of the motion from epoch i to epoch j and the angles are measured from north and eastwards.

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