2008 CT190

--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, scattered disk orbital data, primary (osculating elements) [JPL] : semimajor axis a: 53.0419 AU orbital period P: 386.303 yr (= 141100 d) eccentricity e: 0.345728 perihelion distance q: 34.70387 AU aphelion distance Q: 71.38 AU inclination i: 38.883336° argument of perihelion ω: 48.1162° ascending node Ω: 103.737493° mean anomaly M: 5.63304° perihelion passage TP: 2012 Mar 06.16 Epoch: 2018 Mar 23 data arc: 2002-2018 (118 obs.) Earth MOID: 33.8312 AU Jupiter Tisserand invariant TJ: 4.762 orbital data, secondary: semimajor axis as: 1300 ± 200 km (separation) [N18b] orbital period Ps: 3.3 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 5.5 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 350 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: 1100000 km [*E] other data, primary: diameter dp: 270 km [*E] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 220 km [*E] diameter ratio ds/dp: 0.83 ± 0.12 [*D] component mag. difference ΔM: 0.4 ± 0.3 [N18b] rotation period RPs: ?