(511551) 2014 UD225

--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: 43.2812 AU orbital period P: 284.75 yr (= 104003.5 d) eccentricity e: 0.13251 perihelion distance q: 37.546 AU aphelion distance Q: 49.0165 AU inclination i: 3.65764° argument of perihelion ω: 294.321° ascending node Ω: 343.3171° mean anomaly M: 98.416° perihelion passage TP: 1941 Jun 22.9 Epoch: 2019 Apr 27 data arc: 2000-2017 (66 obs.) Earth MOID: 36.5308 AU Jupiter Tisserand invariant TJ: 5.826 orbital data, secondary: semimajor axis as: 21400 ± 600 km (separation) [F17a] separation/primary radius as/rp: 230 [*E] separation/Hill radius as/rH: 0.039 [*E] orbital period Ps: 460 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 6.7 [MPC] 7 ± 0.5 [G19c] slope parameter G: (0.15) [*A] effective diameter dE: 201 km [*E] geometric albedo: (0.09 ) [*A] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1 g/cm3) [*A] Hill radius rH: 550000 km [*E] other data, primary: diameter dp: 190 km [*E] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 66 km [*E] diameter ratio ds/dp: 0.35 ± 0.01 [F17a] component mag. difference ΔM: 2.3 [*D] rotation period RPs: ?