(762135) 2010 WG9

--Orbital and physical data--

(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)

dynamical type, primary: Centaur orbital data, primary (osculating elements) [JPL] : semimajor axis a: 53.4607 AU orbital period P: 390.895 yr (= 142774 d) eccentricity e: 0.648285 perihelion distance q: 18.80294 AU aphelion distance Q: 88.1184 AU inclination i: 70.163522° argument of perihelion ω: 293.24121° ascending node Ω: 92.032189° mean anomaly M: 18.688° perihelion passage TP: 2006 Feb 22.437 Epoch: 2026 Jun 09 data arc: 2009-2024 (127 obs.) Earth MOID: 18.2963 AU Jupiter Tisserand invariant TJ: 1.754 Neptune Tisserand invariant TN: 1.251 [*D] orbital data, secondary: semimajor axis as: 880 ± 20 km (separation) [P26k] separation/primary radius as/rp: 22 [*E] separation/Hill radius as/rH: 0.0070 [*E] orbital period Ps: 10.991 ± 0.005 d [R13b] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 8.28 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 112.7 ± 61.9 km [B13d] geometric albedo: 0.074 ± 0.08 [B13d] color index U-B: ? color index B-V: 0.798 [*D] color index V-R: 0.52 ± 0.018 [R13b] color index B-R: 1.318 ± 0.029 [R13b] taxonomic type: ? mass m: ? density ρ: (1 g/cm3) [*A] Hill radius rH: 130000 km [*E] other data, primary: diameter dp: 81 ± 44 km [*D] axial ratios a/b, b/c: 1.1, ? [*E] rotation period RPp: 263.78 ± 0.12 h [R13b] amplitude in mag., rotational ΔM: 0.144 [R13b] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 79 ± 43 km [*D] diameter ratio ds/dp: 0.97 ± 0.05 [*D] component mag. difference ΔM: 0.06 ± 0.11 [P26k] rotation period RPs: ?