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Table 2:

List of candidate binary clusters (NCOVOCC).
Pair # Cluster 1 Cluster 2 $\tau_1$ $\tau_2$ $\Delta t$ S d $V_{\rm r}$ 1 pm RA 1 pm dec 1 $V_{\rm r}$ 2 pm RA 2 pm dec 2
      (Myr) (Myr) (Myr) (pc) (pc) (km s-1) (mas yr-1) (mas yr-1) (km s-1) (mas yr-1) (mas yr-1)
1 Mamajek 1 Feigelson 1 8 4 4 24 97 16.1 -30.0 27.8 13.0 -39.5 -1.0
2 ASCC 100 ASCC 101 102 331 229 23 350 -22.89 2.29 -1.51 -32.0 0.81 1.87
3 Collinder 70 $\sigma$ Ori 9 13 3 17 387 19.87 0.15 -0.7 29.45 1.73 0.47
4 $\sigma$ Ori NGC 1976 13 13 0.00 26 399 29.45 1.73 0.47 28.94 1.67 -0.3
5 ASCC 20 Briceño 1 22 8 14 13 450 22.97 -0.09 0.51 0 0.75 -0.18
6 NGC 6405 ASCC 90 94 646 551 26 487 -7.02 -2.19 -5.4 - -2.49 -3.64
7 ASCC 21 ASCC 18 13 13 0 25 500 19.77 0.52 -0.62 24.4 0.89 -0.02
8 Loden 46 NGC 3228 1071 85 986 29 540 - -14.11 2.98 -22.39 -15.64 -0.05
9 Loden 46 ASCC 59 1071 398 673 30 540 - -14.11 2.98 - -4.99 3.65
10 Johansson 1 Alessi 8 199 141 58 29 570 - -3.85 -3.34 - -6.13 -5.8
11 ASCC 4 NGC 189 219 10 209 22 750 -9.24 0.11 -1.48 - - -
12 Basel 5 NGC 6425 741 22 719 28 766 - 3.17 1.76 -3.46 -3.11 -2.79
13 Collinder 197 Alessi 43 13 30 17 20 838 33.1 -9.8 7.4 17.13 -6.39 3.85
14 NGC 6250 Lynga 14 26 5 21 21 865 -8.04 -0.19 -3.3 - -3.04 -3.93
15 NGC 2447 NGC 2448 387 15 372 15 1037 22.08 -4.85 4.47 15.0 -3.8 4.69
16 ESO 132-14 NGC 5281 794 14 780 27 1100 - - - -18.52 -5.29 -3.45
17 Ruprecht 172 Biurakan 2 813 10 803 11 1100 - -1.27 -3.13 -22 -2.31 -3.78
18 NGC 6242 Trumpler 24 41 8 32 25 1131 - 0.38 -0.19 -4 -0.87 -1.27
19 NGC 6204 Hogg 22 79 6 73 16 1200 53 0.04 -1.45 -65.2 -3.16 -3.77
20 NGC 6613 NGC 6618 17 1 16 22 1296 -5.4 -1.02 -1.33 -25.3 1.79 -1.96
21 Basel 8 NGC 2251 126 267 141 7 1328 11 0.43 -2.13 25.33 -0.24 -2.6
22 Markarian 38 Collinder 469 8 63 55 22 1471 -3.2 -1.76 -2.12 - 0.17 -1.19
23 Pismis 19 Trumpler 22 794 89 705 18 1500 - - - - -5.71 -3.39
24 Bica 1 Bica 2 4 4 0 3 1800 - -0.68 -1.13 - -1.38 -1.28
25 Carraro 1 Loden 165 3020 3020 0 10 1900 - - - - - -
26 NGC 2421 Czernik 31 79 178 98 8 2200 - -4.26 4.89 - - -
27 NGC 3324 NGC 3293 6 10 5 21 2317 -8.5 -7.46 3.11 -12 -7.53 3.1

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