(85804) 1998 WQ5

--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: NEA, Amor orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.7214509564 AU orbital period P: 2.2586564789 yr (= 824.9742789 d) eccentricity e: 0.354201898 perihelion distance q: 1.11170976 AU aphelion distance Q: 2.3311921531 AU inclination i: 27.6557919° argument of perihelion ω: 269.7979598° ascending node Ω: 285.72157991° mean anomaly M: 169.4477323° perihelion passage TP: 2022 Feb 01.6943868 Epoch: 2023 Feb 25 data arc: 1989-2022 (2424 obs.) Earth MOID: 0.372369 AU Jupiter Tisserand invariant TJ: 3.976 orbital data, secondary: semimajor axis as: 9.3 km [*E] separation/primary radius as/rp: 6.9 [*E] separation/Hill radius as/rH: 0.039 [*E] orbital period Ps: 1.9221 ± 0.0008 d [W22g] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 15.4 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 2.84 ± 0.06 km [M**] geometric albedo: 0.167 ± 0.028 [M**] color index U-B: ? color index B-V: ? taxonomic type: Sr (Tholen) [LMP] mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 240 km [*E] other data, primary: diameter dp: 2.70 ± 0.06 km [*D] rotation period RPp: 2.6761 ± 0.0003 h [W22g] amplitude in mag., rotational ΔM: 0.06 ± 0.01 [W22g] amplitude in mag., mutual events ΔM: 0.17 ±0.01 [W22g] pole direction Β, λ: ? , ? other data, secondary: diameter ds: >0.89 ± 0.08 km [*D] diameter ratio ds/dp: >0.33 ± 0.03 [W22g] component mag. difference ΔM: <2.4 [*D] rotation period RPs: ?