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Table A.1

Mean astrometric parameters computed for 128 OCs.

OC α δ ⟨ϖ⟩ ϖDAML ϖMWSC ⟨μα *⟩ ⟨μδ⟩ PM† Search radius nb
[deg] [deg] [mas] [mas] [mas] [mas yr−1] [mas yr−1] [arcmin]
ASCC 10 51.765 35.030 1.92 ± 0.20 – 1.43 −3.38 ± 0.16 −1.13 ± 0.20 U 97 21
ASCC 112 304.095 52.098 1.52 ± 0.27 – 1.76 −0.96 ± 0.31 −0.45 ± 0.33 U 61 4
ASCC 113 318.007 38.610 1.74 ± 0.07 2.22 2.0 0.78 ± 0.13 −3.86 ± 0.09 T 74 35
ASCC 123 340.597 54.250 4.58 ± 0.16 4.0 4.0 11.42 ± 0.28 −1.54 ± 0.29 U 136 9
ASCC 124 341.895 46.310 1.27 ± 0.13 – 1.43 0.36 ± 0.10 −1.85 ± 0.10 T 54 11
ASCC 16 81.037 1.640 2.89 ± 0.12 – 2.52 0.92 ± 0.28 0.56 ± 0.21 U 70 27
ASCC 18 81.562 0.900 2.89 ± 0.10 2.0 3.19 0.54 ± 0.24 0.50 ± 0.14 U 133 45
ASCC 19 81.922 −1.965 2.69 ± 0.12 2.86 3.18 0.97 ± 0.18 −0.97 ± 0.15 T 96 25
ASCC 21 82.260 3.560 3.11 ± 0.15 2.0 2.64 0.60 ± 0.23 0.79 ± 0.28 U 66 13
ASCC 23 95.089 46.675 1.59 ± 0.14 1.67 1.67 0.23 ± 0.24 −0.48 ± 0.11 U 112 18
ASCC 32 105.525 −26.560 1.23 ± 0.08 – 1.3 −3.36 ± 0.10 3.68 ± 0.08 T 89 33
ASCC 41 116.745 0.020 3.30 ± 0.17 – 2.52 1.13 ± 0.18 −4.45 ± 0.63 U 89 12
ASCC 51 139.522 −69.690 1.99 ± 0.29 2.0 2.02 −8.12 ± 0.35 8.30 ± 0.29 T 66 6
ASCC 99 282.277 −18.740 3.37 ± 0.15 3.57 1.47 5.72 ± 0.48 −0.49 ± 0.33 U 119 15
Alessi 10 301.182 −10.485 1.92 ± 0.19 1.95 1.95 1.90 ± 0.28 −7.10 ± 0.37 T 63 11
Alessi 12 310.845 23.785 1.90 ± 0.13 1.86 1.84 3.66 ± 0.20 −5.21 ± 0.15 U 126 21
Alessi 13 52.020 −35.870 9.50 ± 0.44 10.0 8.93 36.43 ± 0.56 −4.41 ± 0.33 T 624 15
Alessi 21 107.670 −9.300 1.72 ± 0.09 2.0 1.68 −5.41 ± 0.19 2.53 ± 0.20 T 66 31
Alessi 2 71.565 55.255 1.69 ± 0.09 2.0 1.92 −0.86 ± 0.27 −0.80 ± 0.18 U 62 21
Alessi 3 109.050 −46.617 3.71 ± 0.08 3.47 3.22 −9.70 ± 0.11 12.21 ± 0.12 T 237 29
Alessi 5 160.830 −61.170 2.51 ± 0.04 2.51 2.6 −15.50 ± 0.08 2.62 ± 0.11 T 84 16
Alessi 6 220.132 −66.120 1.23 ± 0.03 – 1.63 −10.36 ± 0.09 −5.67 ± 0.08 T 76 21
Alessi 9 266.295 −47.185 4.89 ± 0.13 4.74 4.59 11.10 ± 0.33 −8.21 ± 0.41 U 351 25
BH 99 159.465 −59.125 2.39 ± 0.15 1.97 1.93 −14.48 ± 0.12 1.30 ± 0.13 T 67 12
Chereul 1 217.267 55.392 10.15 ± 0.31 – – −17.89 ± 0.32 −5.01 ± 0.38 T 653 8
Collinder 135 109.485 −37.035 3.46 ± 0.12 3.16 2.77 −9.28 ± 0.27 5.57 ± 0.22 U 217 36
Collinder 350 267.052 1.360 2.71 ± 0.13 3.57 3.31 −3.68 ± 0.35 0.29 ± 0.29 U 242 19
Collinder 359 270.120 2.875 1.93 ± 0.10 4.02 1.56 1.98 ± 0.23 −8.19 ± 0.26 U 271 54
Collinder 394 283.080 −20.200 1.38 ± 0.10 1.45 1.5 −0.76 ± 0.28 −4.81 ± 0.32 U 45 32
Collinder 463 27.300 71.780 1.36 ± 0.07 1.42 1.25 −1.83 ± 0.07 −0.29 ± 0.15 T 96 41
IC 4725 277.927 −19.110 1.52 ± 0.12 1.61 1.78 −3.43 ± 0.35 −5.87 ± 0.33 U 50 44
IC 4756 279.735 5.450 1.94 ± 0.03 2.07 2.07 0.66 ± 0.13 −2.58 ± 0.14 U 141 99
Lynga 2 216.112 −61.330 0.97 ± 0.12 1.11 1.07 −6.76 ± 0.19 −4.65 ± 0.23 T 32 9
Melotte 101 160.567 −65.095 0.41 ± 0.18 0.5 0.5 −6.91 ± 0.24 2.47 ± 0.18 T 31 10
NGC 0752 29.272 37.790 2.34 ± 0.05 – 2.22 8.19 ± 0.09 −12.12 ± 0.07 U 148 73
NGC 1027 40.665 61.620 0.74 ± 0.09 0.97 1.05 −2.91 ± 0.22 2.11 ± 0.16 U 42 21
NGC 1039 40.549 42.790 1.94 ± 0.10 2.0 1.96 −0.51 ± 0.17 −6.39 ± 0.13 U 134 41
NGC 1342 53.004 37.357 1.47 ± 0.06 1.5 1.5 0.08 ± 0.19 −1.54 ± 0.08 T 49 22
NGC 1528 63.847 51.190 0.99 ± 0.09 0.92 1.05 2.08 ± 0.19 −1.71 ± 0.16 U 40 21
NGC 1545 65.295 50.252 1.38 ± 0.14 1.41 1.16 −2.26 ± 0.17 0.45 ± 0.18 U 45 10
NGC 1647 71.497 19.170 1.88 ± 0.04 1.85 1.75 −0.97 ± 0.09 −1.66 ± 0.12 U 122 57
NGC 1662 72.112 10.925 2.56 ± 0.07 2.29 2.29 −1.05 ± 0.14 −2.02 ± 0.11 T 154 36
NGC 1750 76.140 23.830 1.48 ± 0.08 1.59 – −3.39 ± 0.14 −3.71 ± 0.13 U 107 57
NGC 1778 76.995 37.028 0.52 ± 0.11 0.68 0.67 −0.37 ± 0.41 −4.42 ± 0.38 U 18 5
NGC 1901 79.560 −68.440 2.51 ± 0.11 2.17 2.46 0.78 ± 0.31 13.11 ± 0.24 T 81 6
NGC 1912 82.215 35.800 0.88 ± 0.07 0.71 0.87 −0.01 ± 0.23 −4.51 ± 0.25 U 29 39
NGC 1960 84.082 34.158 1.05 ± 0.07 0.75 0.83 −0.50 ± 0.17 −5.29 ± 0.14 U 21 26
NGC 1977 83.887 −4.830 2.31 ± 0.15 2.0 2.79 −0.25 ± 0.23 −0.17 ± 0.32 T 64 14
NGC 2099 88.087 32.570 0.76 ± 0.11 0.72 0.71 2.25 ± 0.24 −7.12 ± 0.20 U 48 30
NGC 2168 92.302 24.360 1.12 ± 0.05 1.1 1.2 0.62 ± 0.10 −4.06 ± 0.08 U 83 103
NGC 2215 95.220 −7.295 1.31 ± 0.26 1.27 0.88 0.19 ± 0.29 −3.12 ± 0.34 T 52 16
NGC 2244 97.980 4.940 0.86 ± 0.13 0.6 0.65 −0.68 ± 0.51 0.56 ± 0.52 U 20 8
NGC 2264 100.245 9.880 1.38 ± 0.11 1.5 1.54 −0.51 ± 0.30 −3.68 ± 0.28 U 48 6
NGC 2281 102.075 41.080 2.03 ± 0.08 1.79 2.0 −3.96 ± 0.14 −8.05 ± 0.14 U 121 35
NGC 2287 101.512 −20.745 1.29 ± 0.03 1.41 1.3 −4.40 ± 0.06 −1.39 ± 0.04 T 97 77
NGC 2323 105.679 −8.370 1.01 ± 0.04 1.05 1.11 −0.69 ± 0.11 −0.35 ± 0.10 T 72 110
NGC 2353 108.627 −10.250 0.67 ± 0.16 0.85 0.85 −1.03 ± 0.25 0.81 ± 0.24 T 29 18
NGC 2360 109.425 −15.640 0.77 ± 0.04 0.89 0.64 −0.14 ± 0.16 5.99 ± 0.11 T 35 40
NGC 2423 114.277 −13.850 1.07 ± 0.06 1.31 1.21 −0.82 ± 0.11 −3.54 ± 0.09 T 78 78
NGC 2437 115.455 −14.805 0.66 ± 0.03 0.66 0.73 −3.78 ± 0.08 0.33 ± 0.06 T 49 120
NGC 2447 116.145 −23.860 1.13 ± 0.06 0.96 0.96 −3.51 ± 0.15 5.06 ± 0.06 T 65 62
NGC 2451B 116.115 −37.670 2.64 ± 0.10 3.31 2.04 −9.70 ± 0.26 4.33 ± 0.13 T 227 34
NGC 2477 118.035 −38.530 0.64 ± 0.12 0.75 0.69 −0.70 ± 0.57 1.94 ± 0.52 U 25 18
NGC 2482 118.792 −24.275 0.75 ± 0.11 0.84 0.74 −4.47 ± 0.24 2.27 ± 0.12 T 23 35
NGC 2527 121.275 −28.170 1.71 ± 0.04 1.66 1.56 −5.38 ± 0.08 7.37 ± 0.08 T 113 83
NGC 2539 122.670 −12.840 1.17 ± 0.18 0.73 0.81 −2.48 ± 0.25 −2.33 ± 0.29 U 47 25
NGC 2546 122.962 −37.610 0.98 ± 0.07 1.09 1.07 −4.30 ± 0.11 4.41 ± 0.10 T 35 46
NGC 2548 123.435 −5.770 1.44 ± 0.06 1.3 1.27 −0.39 ± 0.20 2.68 ± 0.23 U 87 63
NGC 2567 124.642 −30.650 0.56 ± 0.06 0.6 0.6 −2.97 ± 0.11 2.34 ± 0.08 T 19 21
NGC 2571 124.735 −29.735 1.02 ± 0.14 0.75 0.75 −4.50 ± 0.21 4.36 ± 0.14 T 23 14
NGC 2669 131.617 −52.940 1.06 ± 0.16 0.96 0.95 −4.09 ± 0.35 4.55 ± 0.40 T 30 11
NGC 2670 131.392 −48.820 0.59 ± 0.09 0.84 0.77 −5.68 ± 0.20 3.70 ± 0.23 T 24 14
NGC 2682 132.847 11.815 1.42 ± 0.20 1.24 1.12 −9.38 ± 0.35 −4.35 ± 0.33 U 31 17
NGC 3228 155.355 −51.730 2.27 ± 0.11 1.84 1.75 −15.63 ± 0.48 −0.34 ± 0.38 T 125 19
NGC 3330 159.690 −54.115 0.65 ± 0.07 1.12 0.8 −7.20 ± 0.13 0.97 ± 0.14 T 36 21
NGC 3680 171.405 −43.235 1.18 ± 0.10 1.07 1.06 −7.15 ± 0.22 0.90 ± 0.18 T 34 17
NGC 4103 181.665 −61.250 0.38 ± 0.27 0.61 0.6 −6.56 ± 0.31 −0.60 ± 0.24 T 17 6
NGC 4609 190.575 −62.990 0.60 ± 0.17 0.76 0.76 −4.97 ± 0.27 −1.20 ± 0.19 T 25 8
NGC 4852 195.045 −59.590 0.63 ± 0.14 0.91 0.9 −8.03 ± 0.14 −2.10 ± 0.19 T 29 21
NGC 5138 201.795 −59.030 0.62 ± 0.11 0.5 0.55 −3.67 ± 0.10 −1.41 ± 0.20 T 16 7
NGC 5316 208.485 −61.870 0.67 ± 0.05 0.82 0.83 −6.34 ± 0.07 −1.53 ± 0.07 T 25 29
NGC 5460 211.890 −48.330 1.49 ± 0.18 1.43 1.53 −3.74 ± 0.50 −0.51 ± 0.30 U 48 19
NGC 5617 217.447 −60.715 0.38 ± 0.08 0.5 0.57 −5.38 ± 0.17 −3.20 ± 0.08 T 21 24
NGC 5662 218.895 −56.615 1.37 ± 0.06 1.5 1.6 −6.54 ± 0.14 −7.18 ± 0.07 T 49 31
NGC 5822 226.117 −54.390 1.19 ± 0.04 1.07 1.26 −7.44 ± 0.09 −5.30 ± 0.05 T 74 96
NGC 6025 240.817 −60.400 1.21 ± 0.05 1.32 1.31 −3.05 ± 0.12 −3.00 ± 0.10 T 44 35
NGC 6067 243.300 −54.220 0.37 ± 0.06 0.71 0.56 −1.98 ± 0.15 −2.78 ± 0.08 T 22 46
NGC 6087 244.710 −57.940 0.93 ± 0.05 1.12 1.12 −1.67 ± 0.08 −2.47 ± 0.08 T 36 15
NGC 6124 246.315 −40.650 1.66 ± 0.05 1.95 1.79 −0.53 ± 0.20 −0.53 ± 0.21 U 130 48
NGC 6134 246.952 −49.155 1.03 ± 0.11 0.79 1.12 0.77 ± 0.38 −4.18 ± 0.41 T 36 20
NGC 6152 248.175 −52.640 0.63 ± 0.05 0.97 0.97 −3.14 ± 0.20 −4.88 ± 0.20 T 30 30
NGC 6281 256.170 −37.980 1.70 ± 0.08 2.09 1.95 −2.04 ± 0.26 −2.81 ± 0.32 U 70 57
NGC 6405 265.080 −32.215 2.00 ± 0.14 2.05 2.81 −1.44 ± 0.31 −4.76 ± 0.31 U 68 41
NGC 6416 266.092 −32.365 1.06 ± 0.12 1.35 1.3 −1.09 ± 0.46 −0.47 ± 0.36 U 43 28
NGC 6494 269.227 −19.000 1.23 ± 0.08 1.59 1.54 1.17 ± 0.24 0.09 ± 0.22 U 49 53
NGC 6604 274.507 −12.238 0.54 ± 0.15 0.59 0.53 −0.72 ± 0.36 −0.97 ± 0.46 U 37 23
NGC 6694 281.317 −9.380 0.51 ± 0.05 0.6 0.57 0.28 ± 0.28 −1.01 ± 0.24 T 17 12
NGC 6705 282.747 −6.280 0.57 ± 0.13 0.53 0.57 −2.19 ± 0.46 −5.07 ± 0.48 T 15 7
NGC 6716 283.642 −19.885 1.38 ± 0.12 1.27 1.49 −0.56 ± 0.32 −4.14 ± 0.39 U 85 56
NGC 6793 290.824 22.140 1.66 ± 0.16 0.91 1.38 3.77 ± 0.30 3.51 ± 0.26 T 60 27
NGC 6811 294.342 46.395 0.98 ± 0.11 0.82 0.81 −4.60 ± 0.18 −7.69 ± 0.17 U 54 27
NGC 6866 300.987 44.160 0.96 ± 0.25 0.84 0.75 −1.90 ± 0.63 −4.97 ± 0.27 U 9 4
NGC 6913 306.000 38.510 0.52 ± 0.06 0.65 0.85 −3.97 ± 0.13 −5.51 ± 0.13 U 58 51
NGC 6940 308.610 28.280 0.93 ± 0.05 1.3 1.18 −2.10 ± 0.11 −9.45 ± 0.12 T 87 74
NGC 6991 313.614 47.466 1.85 ± 0.09 1.43 1.77 5.22 ± 0.16 8.79 ± 0.08 U 97 42
NGC 7209 331.225 46.552 1.14 ± 0.13 0.86 0.8 2.05 ± 0.19 0.38 ± 0.14 T 57 28
NGC 7243 333.795 49.875 1.30 ± 0.11 1.24 1.18 0.10 ± 0.10 −2.33 ± 0.09 U 40 29
Platais 10 205.290 −59.225 3.84 ± 0.18 4.07 4.07 −30.22 ± 0.30 −10.59 ± 0.44 T 138 10
Platais 3 69.450 71.470 5.60 ± 0.05 5.0 5.88 3.51 ± 0.26 −21.10 ± 0.20 T 343 15
Platais 8 136.875 −59.160 7.59 ± 0.11 7.58 7.09 −15.82 ± 0.29 14.93 ± 0.32 T 457 19
Platais 9 137.955 −43.530 5.59 ± 0.26 5.75 5.0 −25.47 ± 0.38 13.54 ± 0.30 T 342 21
Roslund 3 299.662 20.514 0.77 ± 0.15 0.68 0.63 −1.36 ± 0.32 −4.18 ± 0.26 U 19 14
Roslund 6 307.140 39.205 2.68 ± 0.10 2.22 1.84 5.18 ± 0.21 1.75 ± 0.20 U 152 41
Ruprecht 145 282.660 −18.227 1.47 ± 0.08 3.13 1.3 7.51 ± 0.33 −2.60 ± 0.23 U 85 30
Ruprecht 147 289.092 −16.250 3.26 ± 0.09 3.39 3.7 −1.48 ± 0.26 −26.85 ± 0.20 U 194 63
Ruprecht 1 99.135 −14.193 0.87 ± 0.15 0.68 0.83 −1.26 ± 0.30 0.16 ± 0.18 T 28 16
Ruprecht 98 179.715 −64.588 2.08 ± 0.10 2.02 1.64 −4.30 ± 0.16 −8.66 ± 0.13 T 138 20
Stock 10 84.810 37.805 2.90 ± 0.20 2.63 2.0 −4.16 ± 0.27 −1.08 ± 0.29 U 87 13
Stock 12 353.895 52.685 2.17 ± 0.10 2.08 2.33 8.22 ± 0.23 −2.32 ± 0.13 U 84 22
Stock 1 293.955 25.175 2.31 ± 0.05 3.14 2.86 5.92 ± 0.09 0.49 ± 0.12 T 213 50
Stock 2 33.660 59.440 2.78 ± 0.03 3.3 2.5 16.26 ± 0.06 −13.79 ± 0.05 U 226 149
Stock 7 37.432 60.675 1.44 ± 0.26 1.43 1.18 −4.57 ± 0.19 1.11 ± 0.16 U 48 12
Trumpler 10 131.872 −42.400 2.28 ± 0.07 2.36 2.4 −12.38 ± 0.13 6.84 ± 0.12 T 161 59
Trumpler 2 39.367 55.950 1.49 ± 0.10 1.38 1.49 0.14 ± 0.16 −6.28 ± 0.13 U 50 14
Trumpler 33 276.172 −19.720 0.59 ± 0.13 0.57 0.78 −0.81 ± 0.76 −1.01 ± 1.41 U 10 7
Trumpler 3 48.052 63.150 1.36 ± 0.10 2.17 1.61 −3.90 ± 0.18 −0.25 ± 0.10 U 46 20
Turner 5 143.317 −36.410 2.49 ± 0.08 2.5 2.5 0.19 ± 0.29 −2.67 ± 0.24 T 83 11
vdBergh 92 106.020 −11.530 0.86 ± 0.21 0.67 0.64 −5.28 ± 0.41 2.29 ± 0.30 T 20 10

Notes. Flag †U indicates that the UCAC4 proper motions were used, T indicates TGAS proper motions. ϖDAML and ϖMWSC are the expected parallaxes assuming no error on the catalogue value.

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