(494658) 2000 UG11

--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: NEA, Apollo (PHA) orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.928364818 AU orbital period P: 2.677885485 yr (= 978.0976735 d) eccentricity e: 0.572821161 perihelion distance q: 0.823756645 AU aphelion distance Q: 3.032972991 AU inclination i: 8.9237234° argument of perihelion ω: 240.543154° ascending node Ω: 224.2172603° mean anomaly M: 4.222776° perihelion passage TP: 2014 May 11.52697 Epoch: 2014 May 23 data arc: 2000-2009 (421 obs.) Earth MOID: 0.00734736 AU Jupiter Tisserand invariant TJ: 3.684 orbital data, secondary: binary dynamical type: A [P07f] semimajor axis as: 0.426 ± 0.027 km [M02b] separation/primary radius as/rp: 3.3 [*D] separation/Hill radius as/rH: 0.030 [*D] orbital period Ps: 0.7667 ± 0.006 d [P06b] eccentricity es: 0.12 ± 0.02 [M02b] normalized ang. mom. αL: 1.16 [P07f]

other data, system (combined): absolute mag. H: 20.4 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 0.29 km [*D] geometric albedo: 0.09 ± 0.03 [P06b] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: 9.4x109 ± 1.6x109 kg [M02b] density ρ: 1.47 ± 0.7 g/cm3[M02b] Hill radius rH: 14 km [*D] other data, primary: diameter dp: 0.26 ± 0.03 km [P06b] rotation period RPp: 4.44 ± 0.01 h [P06b] amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 0.13 ± 0.03 km [*D] diameter ratio ds/dp: 0.5 ± 0.09 [P06b] component mag. difference ΔM: 1.5 ± 0.4 [*D] rotation period RPs: ?