(555678) 2014 CO23

--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 hot orbital data, primary (osculating elements) [JPL] : semimajor axis a: 43.91129 AU orbital period P: 290.9863 yr (= 106282.7 d) eccentricity e: 0.1776528 perihelion distance q: 36.11032 AU aphelion distance Q: 51.7123 AU inclination i: 7.936397° argument of perihelion ω: 50.1065° ascending node Ω: 20.33948° mean anomaly M: 98.6362° perihelion passage TP: 1946 Feb 28.64 Epoch: 2025 Nov 21 data arc: 2002-2025 (284 obs.) Earth MOID: 35.13 AU Jupiter Tisserand invariant TJ: 5.781 Neptune Tisserand invariant TN: 3.040 [*D] orbital data, secondary: semimajor axis as: 4450 km (separation) [P26b] separation/primary radius as/rp: 28 [*E] separation/Hill radius as/rH: 0.0050 [*E] orbital period Ps: 16 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 5.3 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 412 km [*E] geometric albedo: (0.079 ) [*A] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1 g/cm3) [*A] Hill radius rH: 880000 km [*E] other data, primary: diameter dp: 313 km [*E] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 268 km [*E] diameter ratio ds/dp: 0.86 [*D] component mag. difference ΔM: 0.34 [P26b] rotation period RPs: ?