(2280) Kunikov

--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 orbital data, primary (osculating elements) [JPL] : semimajor axis a: 2.1787354931 AU orbital period P: 3.21599203824 yr (= 1174.64109197 d) eccentricity e: 0.14138298704 perihelion distance q: 1.8706993611 AU aphelion distance Q: 2.48677162512 AU inclination i: 3.569034318° argument of perihelion ω: 264.2610964° ascending node Ω: 106.45794475° mean anomaly M: 51.46810783° perihelion passage TP: 2023 Mar 29.06512671 Epoch: 2023 Sep 13 data arc: 1957-2024 (4292 obs.) Earth MOID: 0.873564 AU Jupiter Tisserand invariant TJ: 3.667 orbital data, secondary: semimajor axis as: 11 km [*E] separation/primary radius as/rp: 4.7 [*E] separation/Hill radius as/rH: 0.014 [*E] orbital period Ps: 0.89496 ± 0.00012 d [B24b] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 13.46 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 6.14 ± 0.14 km [M19a] geometric albedo: 0.27 ± 0.042 [M19a] color index U-B: ? color index B-V: ? color index J-H: 0.483 ± 0.03 [S10b] taxonomic type: Sa (SMASSII) [JPL] mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 800 km [*E] other data, primary: diameter dp: 4.63 km [*D] rotation period RPp: 21.479 ± 0.003 h [B24b] amplitude in mag., rotational ΔM: 0.45 [B24b] amplitude in mag., mutual events ΔM: 0.685 ±0.075 [B24b] pole direction Β, λ: ? , ? other data, secondary: diameter ds: >4.03 km [*D] diameter ratio ds/dp: >0.87 [B24b] component mag. difference ΔM: <0.30 [*D] rotation period RPs: 21.479 ± 0.003 h [B24b]