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Table A.3

Density, size, and albedo from this work and from the literature.

System M syst ρ R p R s p v Technique Reference
×1018 [kg] [g cm-3] [km] [km]
Salacia-Actaea 438 ± 16 1.16 453 ± 52 152 ± 18 0.0357 thermal S12
... 1.38± 0.27 431 ± 35 146 ± 11 0.0439 ± 0.0044 thermal S12, V12
... 1.29 427 ± 23 143 ± 12 0.044 ± 0.004 thermal S12, F13
... >0.92 <491 <165 >0.03 light curve S12, TW
Varda-Ilmarë 260.2 ± 4.7 1.25 399 ± 49 205 ± 25 0.077 thermal G13, V14
... >1.11 <366 <188 >0.09 light curve G13, TW
2007 TY430 0.790 ± 0.021 0.5 <60 <60 >0.17 estimatea Sh12
... >0.46 <58 <55 >0.12 light curve Sh12, TW
2001 QY297 4.10 ± 0.04 0.92 85 77 0.075 thermal G11b, V12, V14
... >0.29 <129 <107 >0.08 light curve G11b, T12
Huya ? ? 236 ± 11 124 ± 6 0.05 ± 0.05 thermal S08
? ? 195 ± 12 102 ± 6 0.081 ± 0.011 thermal M12
? >1.43 ? ? ? light curve TW
Orcus-Vanth 632 ± 1 1.5 ± 0.3 450 ± 34 136 ± 10 0.28 ± 0.04 thermal+orbit B10
... ? 453 ± 36 137 ± 11 0.197 ± 0.034 thermal B10, S08
... ? 416.5 ± 22.5 126 ± 8 0.25 ± 0.03 thermal B10, L10
... 1.53 459 ± 13 138 ± 9 0.231 thermal B10, F13
... >0.35 <749 <225 >0.09 light curve B10, T10, TW
Typhon-Echidna 0.949 ± 0.052 0.44 78 ± 8 43 ± 4 ? thermal+orbit G08
... ? 76 ± 8 42 ± 4 0.051 thermal G08, S08
... ? 61 ± 4 34 ± 3 0.08 ± 0.01 thermal G08, M10
... 0.36 81 ± 4 45 ± 3 0.044 ± 0.003 thermal G08, SS12
... >0.42 <76 <42 >0.06 light curve G08, T10, TW
Quaoar-Weywot ? ? 633 ± 100 47 ± 7 0.092 direct B04
? ? 425 ± 99 33 ± 8 0.199 thermal S08
? ? 450 ± 56 34 ± 4 0.172 thermal B09
1600 ± 300 4.2 ± 1.3 445 ± 35 34 ± 3 ? orbit F10
(1300−1500) ± 100 2.7−5.0 ? ? ? orbit Fr13
1650 ± 160 1.6 ± 1.3 or 4.5 ± 1.8 ? ? ? orbitb VBM12
(1300−1500) ± 100 2.18 535 ± 19 41 ± 6 0.137 thermal Fr13, F13
(1300−1500) ± 100 1.99 ± 0.46 569 41 ± 6 0.109 ± 0.007 occultationc Fr13, B13
1600 ± 300 >0.5 <914 <69 >0.06 light curve F10, T10, TW
2003 AZ84 ? ? 446 ± 28 45 ± 3 0.065 ± 0.008 thermal M10
? ? 362 ± 32 36 ± 15 0.107 thermal M12
? >0.85 ? ? ? light curve T10
2007 UK126 ? ? 295 ± 38 52 ± 7 0.167 thermal SS12
? >0.32 ? ? ? light curve TW

Notes. For each system with short-term variability in this work, in Thirouin et al. (2010), and Thirouin et al. (2012), we present the name of the system, the system mass (Msyst), the lower limit of the density (ρ), upper limits of the primary and satellite sizes (Rp and Rs, respectively), and the lower limit of the geometric albedo (pv). Several techniques can be used to estimate parameters such as thermal modeling (thermal), determined from mutual orbit of binary components (orbit), direct imaging (direct), occultation, or from the light curve. We must point out that when the density is derived from the light curve it is only the lower density limit. The last column is dedicated to the references.

(a)

Sheppard et al. (2012) only assumed a possible density to derive a size and albedo, none of these values were computed.

(b)

Two orbital solutions were suggested by Vachier et al. (2012), and two different density estimates were derived depending on the orbital solution.

(c)

Braga-Ribas et al. (2013) obtained the equatorial radius of Quaoar.

Reference. B04: Brown & Trujillo (2004); G08: Grundy et al. (2008); S08: Stansberry et al. (2008); B09: Brucker et al. (2009); B10: Brown et al. (2010); F10: Fraser & Brown (2010); L10: Lim et al. (2010); M10: Müller et al. (2010); T10: Thirouin et al. (2010); G11: Grundy et al. (2011a); G11b: Grundy et al. (2011b); M12: Mommert et al. (2012); S12: Stansberry et al. (2012); SS12: Santos-Sanz et al. (2012); Sh12: Sheppard et al. (2012); T12: Thirouin et al. (2012); V12: Vilenius et al. (2012); VBM12: Vachier et al. (2012); B13: Braga-Ribas et al. (2013); F13: Fornasier et al. (2013); Fr13: Fraser et al. (2013); G13: Grundy, in prep.; V14: Vilenius et al. (2014); TW: This work.

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