(15094) Polymele

--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: Jupiter trojan asteroid, L4 orbital data, primary (osculating elements) [JPL] : semimajor axis a: 5.18030111 AU orbital period P: 11.79073038 yr (= 4306.56427 d) eccentricity e: 0.096759738 perihelion distance q: 4.67905653 AU aphelion distance Q: 5.68154569 AU inclination i: 12.9813206° argument of perihelion ω: 4.77153° ascending node Ω: 50.31861° mean anomaly M: 44.313672° perihelion passage TP: 2021 Sep 12.88979 Epoch: 2023 Feb 25 data arc: 1991-2019 (831 obs.) Earth MOID: 3.68929 AU Jupiter Tisserand invariant TJ: 2.94 orbital data, secondary: semimajor axis as: 204 km [B22p] separation/primary radius as/rp: 22.3 [*D] separation/Hill radius as/rH: 0.030 [*D] orbital period Ps: 11 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 11.81 [MPC] slope parameter G: 0.22 [JPL] effective diameter dE: 21.08 ± 0.14 km [M**] geometric albedo: 0.091 ± 0.017 [M**] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 6700 km [*E] other data, primary: diameter dp: 18.3 km [*D] dimensions : 26.2 x 12.8km [] rotation period RPp: 5.8607 ± 0.0005 h [JPL] amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 5.5 km [*D] diameter ratio ds/dp: 0.3 [*D] component mag. difference ΔM: 2.6 [*D] rotation period RPs: ?