(2449) Kenos

--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: Mars crossing asteroid orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.909047502 AU orbital period P: 2.637698196 yr (= 963.4374618 d) eccentricity e: 0.168238351 perihelion distance q: 1.587872499 AU aphelion distance Q: 2.2302225049 AU inclination i: 24.982612° argument of perihelion ω: 102.258123° ascending node Ω: 179.863854° mean anomaly M: 244.821506° perihelion passage TP: 2015 Oct 13.242433 Epoch: 2014 Dec 09 data arc: 1978-2015 (905 obs.) Earth MOID: 0.712267 AU Jupiter Tisserand invariant TJ: 3.808 orbital data, secondary: semimajor axis as: 52 km [*E] separation/primary radius as/rp: 34 [*E] separation/Hill radius as/rH: 0.14 [*E] orbital period Ps: 0.6604 ± 0.0004 d [W15h] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 14.26 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 3.17 km [A17c] geometric albedo: 0.348 [*A17] color index U-B: 0.356 [JPL] color index B-V: 0.684 [JPL] taxonomic type: E (Tholen) [JPL] mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 380 km [*E] other data, primary: diameter dp: 3.09 km [*D] rotation period RPp: 3.8481 ± 0.0003 h [W15h] amplitude in mag., rotational ΔM: 0.14 ± 0.02 [W15h] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 0.71 km [*D] diameter ratio ds/dp: 0.23 [W17a] component mag. difference ΔM: 3.2 [*D] rotation period RPs: 15.85 ± 0.01 h [W15h]