2003 YS179

--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: 43.863 AU orbital period P: 290.506 yr (= 106107.5 d) eccentricity e: 0.02528 perihelion distance q: 42.754 AU aphelion distance Q: 44.972 AU inclination i: 3.72440° argument of perihelion ω: 114.26° ascending node Ω: 86.5251° mean anomaly M: 285.90° perihelion passage TP: 2074 Mar 10 Epoch: 2014 May 23 data arc: 2003-2013 (20 obs.) Earth MOID: 41.7538 AU Jupiter Tisserand invariant TJ: 5.911 Neptune Tisserand invariant TN: 3.10 [*D] orbital data, secondary: semimajor axis as: 7830 ± 90 km (separation) [G12b] separation/primary radius as/rp: 120 [*E] separation/Hill radius as/rH: 0.018 [*E] orbital period Ps: 150 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 6.8 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 167 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: 420000 km [*E] other data, primary: diameter dp: 126 km [*E] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 110 km [*E] diameter ratio ds/dp: 0.871 [G12b] component mag. difference ΔM: 0.3 [G12b] rotation period RPs: ?