2004 VD131

--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 cold orbital data, primary (osculating elements) [JPL] : semimajor axis a: 46.7584 AU orbital period P: 319.741 yr (= 116785 d) eccentricity e: 0.13291 perihelion distance q: 40.5439 AU aphelion distance Q: 52.9729 AU inclination i: 3.64276° argument of perihelion ω: 332.337° ascending node Ω: 36.0533° mean anomaly M: 49.712° perihelion passage TP: 1980 Feb 04.1 Epoch: 2024 Mar 31 data arc: 1999-2020 (34 obs.) Earth MOID: 39.5438 AU Jupiter Tisserand invariant TJ: 6.041 Neptune Tisserand invariant TN: 3.110 [*D] orbital data, secondary: semimajor axis as: 1000 km (separation) [P24b] separation/primary radius as/rp: 12 [*E] separation/Hill radius as/rH: 0.0020 [*E] orbital period Ps: 4.8 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 6.6 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 211 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: 510000 km [*E] other data, primary: diameter dp: 163 km [*E] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 134 km [*E] diameter ratio ds/dp: 0.82 [P24b] component mag. difference ΔM: 0.4 [*D] rotation period RPs: ?