2005 EO304

--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: TNO, Cubewano orbital data, primary (osculating elements) [JPL] : semimajor axis a: 45.734 AU orbital period P: 309.291 yr (= 112968.5 d) eccentricity e: 0.0684 perihelion distance q: 42.606 AU aphelion distance Q: 48.862 AU inclination i: 3.41611° argument of perihelion ω: 146.79° ascending node Ω: 93.824° mean anomaly M: 326.20° perihelion passage TP: 2043 Jun 06 Epoch: 2014 May 23 data arc: 2005-2009 (25 obs.) Earth MOID: 41.5942 AU Jupiter Tisserand invariant TJ: 6.019 Neptune Tisserand invariant TN: 3.11 [*D] orbital data, secondary: semimajor axis as: 69800 ± 2050 km [P11a] separation/primary radius as/rp: 920 [*D] separation/Hill radius as/rH: 0.155 [*D] orbital period Ps: 3579 ± 164 d [P11a] eccentricity es: 0.22 ± 0.02 [P11a] inclination is: 12.4° ± 0.65° [P11a] ascending node Ωs: 259° ± 2.5° [P11a] argument of pericenter ωs: 206° ± 7° [P11a] mean anomaly M: 193° ± 10.5° [P11a] Epoch: 2005 Mar 11.44 normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 6.3 [MPC] 6.59 [P11a] slope parameter G: (0.15) [*A] effective diameter dE: 171 km [*D] geometric albedo: 0.15 ± 0.01/0.01 [P11a] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: 2.1x1018 ± 8.05x1016 kg [P11a] density ρ: (1 g/cm3) [*A] Hill radius rH: 450000 km [*D] other data, primary: diameter dp: 152.4 ± 2/1.8 km [P11a] color index V-I: 1.43 ± 0.14 [B08d] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 78 ± 1.5/1.4 km [*D] diameter ratio ds/dp: 0.513 ± 0.007 [P11a] component mag. difference ΔM: 1.45 ± 0.03 [P11a] color index V-I: 1.36± 0.19 [B08d] rotation period RPs: ?