(666201) 2009 YK32

--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: 44.0984 AU orbital period P: 292.848 yr (= 106962.6 d) eccentricity e: 0.02983 perihelion distance q: 42.78292 AU aphelion distance Q: 45.4138 AU inclination i: 3.517664° argument of perihelion ω: 35.602° ascending node Ω: 109.949399° mean anomaly M: 336.112° perihelion passage TP: 2043 Feb 17.6 Epoch: 2023 Sep 13 data arc: 2009-2023 (126 obs.) Earth MOID: 41.7944 AU Jupiter Tisserand invariant TJ: 5.927 Neptune Tisserand invariant TN: 3.09826575445601 [*D] orbital data, secondary: semimajor axis as: 20000 ± 2000 km (separation) [L24a] separation/primary radius as/rp: 201 [*E] separation/Hill radius as/rH: 0.029 [*E] orbital period Ps: 300 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 6.07 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 269 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: 680000 km [*E] other data, primary: diameter dp: 199 km [*E] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 181 km [*E] diameter ratio ds/dp: 0.91 ± 0.04 [*D] component mag. difference ΔM: 0.2 ± 0.1 [L24a] rotation period RPs: ?