(22790) 1999 KP4

--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: main belt asteroid, inner orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.89517224121 AU orbital period P: 2.609042972 yr (= 952.95294553 d) eccentricity e: 0.06291760838 perihelion distance q: 1.7759325363 AU aphelion distance Q: 2.0144119461 AU inclination i: 26.294219792° argument of perihelion ω: 239.6071804° ascending node Ω: 131.79728818° mean anomaly M: 264.0012129° perihelion passage TP: 2026 Jan 14.1175749 Epoch: 2025 May 05 data arc: 1991-2025 (3588 obs.) Earth MOID: 0.807821 AU Jupiter Tisserand invariant TJ: 3.826 orbital data, secondary: semimajor axis as: 6.5 km [*E] separation/primary radius as/rp: 4.2 [*E] separation/Hill radius as/rH: 0.014 [*E] orbital period Ps: 0.8038 ± 0.0004 d [B25k] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 14.35 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 3.81 ± 0.1 km [M19a] geometric albedo: 0.305 ± 0.05 [M19a] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 480 km [*E] other data, primary: diameter dp: 3.12 ± 0.08 km [*D] dimensions : 3.5 x 2.8 km [*E] axial ratios a/b, b/c: 1.2, ? [*E] rotation period RPp: 19.29 ± 0.01 h [B25k] amplitude in mag., rotational ΔM: 0.24 [B25k] amplitude in mag., mutual events ΔM: 0.485 ±0.055 [B25k] pole direction Β, λ: ? , ? other data, secondary: diameter ds: >2.18 km [*D] diameter ratio ds/dp: >0.7 [B25k] component mag. difference ΔM: <0.77 [*D] rotation period RPs: 19.29 ± 0.01 h [B25k]