Orbital properties of binary minor planets 5 TABLE 2 The external (helicentric) orbital parameters of BMPs Name SMA e$_{out}$ i$_{out}$ Ω$_{out}$ Mass error class ref. (AU) (deg) (deg) (10 18 kg) (10 18 kg) 3749 Balam ⋆ 2.24 0.11 5.39 295.84 0 ± 0.00002 FF 45 Eugenia ⋆ 2.72 0.08 6.61 147.92 5.69 ± 0.12 MB 22 Kalliope 2.91 0.1 13.71 66.23 8.10 ± 0.2 MB 283 Emma 3.04 0.15 8 304.42 1.38 ± 0.03 EF 130 Elektra 3.12 0.21 22.87 145.46 6.6 ± 0.4 MB 379 Huenna 3.13 0.19 1.67 172.07 0.38 ± 0.019 TF 762 Pulcova 3.15 0.1 13.09 305.8 1.4 ± 0.1 MB 90 Antiope 3.16 0.16 2.22 70.22 0.83 ± 0.02 TF 121 Hermione 3.44 0.14 7.6 73.18 4.7 ± 0.2 OMB 107 Camilla 3.48 0.08 10.05 173.12 11.2 ± 0.3 OMB 87 Sylvia ⋆ 3.49 0.08 10.86 73.31 14.87 ± 0.06 OMB 617 Patroclus 5.22 0.14 22.05 44.35 1.36 ± 0.11 JT 42355 Typhon 37.65 0.53 2.43 351.96 0.95 ± 0.052 Cent 1999OJ4 38.10 0.02 2.61 127.46 0.40 ± 0.0087 ICC 11 90482 Orcus 39.17 0.23 20.58 268.65 632 ± 5 3:2N 4 47171 TC36 ⋆ 39.7 0.23 8.41 97.08 14.2 ± 0 . 05 3:2N 134340 Pluto ⋆ 39.45 0.25 17.09 110.38 14570 ± 9 3:2N 134860 2000OJ67 42.9 0.01 1.33 96.76 2.15 ± 0.099 CC 11 2001 XR254 43 0.02 2.66 52.73 3.92 ± 0.089 CC 11 136108 Haumea ⋆ 43.08 0.2 28.22 122.1 4200 ± 100 HF 66652 Borasisi 44.07 0.09 0.56 84.74 3.8 ± 0.4 CC 2001QW322 44.28 0.02 4.8 124.67 1.5 CC 88611 Teharonhiawako 44.29 0.02 2.57 304.63 3.2 +0 . 3 $_{−}$0 . 2 CC 2003TJ58 44.5 0.09 1.31 37.12 0.22 ± 0.0078 CC 11 1998WW31 44.64 0.09 6.81 237.1 2.7 CC 2004PB108 45.1 0.11 19.19 147.38 9.88 ± 0.37 HC 10 58534 Logos 45.5 0.12 2.9 132.64 0.42 ± 0.02 CC 2000QL251 47.8 0.21 5.83 223.29 3.14 ± 0.03 2:1N 10 136199 Eris 67.96 0.44 43.97 35.99 16600 ± 200 SD 65489 Ceto 100.17 0.82 22.32 172.04 5.42 ± 0.42 Cent Unless noted otherwise all outer parameters are taken from JPL small bodies database (see http://ssd.jpl.nasa.gov/sbdb.cgi). Errors are shown where available. Multiple systems are marked with $^{⋆}$. References are detailed in Table 1. The heliocentric orbital classification is noted as "class", where we used the following notations: MB, OMB, JT, CC, ICC, HC, SD, Cen, HF, TF, EF, FF and n : m N for Main Belt, Outer Main Belt, Jupiter Trojan, Cold Classical, Inner Cold Classical, Hot Classical, Scattered Disk, Centaur,Haumea Family, Themis Family, Eos Family, Flora Family for n : m Neptune resonances respectably. Asteroid family membership is based on listings in Zappala et al. (1995). The prevalence of binaries among the cold classical population of the transneptunian belt is discussed further in Noll et al. (2008).