2014 LQ28

--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: 43.5274 AU orbital period P: 278.18 yr (= 104891.9 d) eccentricity e: 0.093352 perihelion distance q: 39.464 AU aphelion distance Q: 47.5907 AU inclination i: 1.30096° argument of perihelion ω: 157.704° ascending node Ω: 223.3106° mean anomaly M: 340.877° perihelion passage TP: 2033 Jun 24 Epoch: 2018 Mar 23 data arc: 2010-2015 (122 obs.) Earth MOID: 38.4658 AU Jupiter Tisserand invariant TJ: 5.877 Neptune Tisserand invariant TN: 3.086 [*D] orbital data, secondary: semimajor axis as: 24000 km (separation) [S18a] separation/primary radius as/rp: 210 [*E] separation/Hill radius as/rH: 0.030 [*E] orbital period Ps: 320 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 5.7 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 304 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: 790000 km [*E] other data, primary: diameter dp: 234 km [*E] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 194 km [*E] diameter ratio ds/dp: 0.83 [*D] component mag. difference ΔM: 0.4 [S18a] rotation period RPs: ?