(19281) 1996 AP3

--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: 2.2873994221 AU orbital period P: 3.459562754 yr (= 1263.605296 d) eccentricity e: 0.193640059 perihelion distance q: 1.844467264 AU aphelion distance Q: 2.7303315801 AU inclination i: 6.82469998° argument of perihelion ω: 66.4001635° ascending node Ω: 273.3179446° mean anomaly M: 343.1039513° perihelion passage TP: 2022 Oct 07.305380 Epoch: 2022 Aug 09 data arc: 1988-2022 (2729 obs.) Earth MOID: 0.847559 AU Jupiter Tisserand invariant TJ: 3.567 orbital data, secondary: semimajor axis as: 9.2 km [*E] separation/primary radius as/rp: 4.2 [*E] separation/Hill radius as/rH: 0.015 [*E] orbital period Ps: 0.9279 ± 0.0004 d [B22n] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 13.81 [MPC] slope parameter G: (0.24) [*A] effective diameter dE: 4.51 ± 0.24 km [M**] geometric albedo: 0.316 ± 0.097 [M**] color index U-B: ? color index B-V: ? color index J-H: -0.042 ± 0.178 [LMP] taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 630 km [*E] other data, primary: diameter dp: 4.36 ± 0.23 km [*D] rotation period RPp: 2.37256 ± 0.0001 h [B22n] amplitude in mag., rotational ΔM: 0.17 [B22m] amplitude in mag., mutual events ΔM: 0.17 [B22n] pole direction Β, λ: ? , ? other data, secondary: diameter ds: >1.13 ± 0.06 km [*D] axial ratios a/b, b/c: 1.3;? [B22n] diameter ratio ds/dp: >0.26 [B22n] component mag. difference ΔM: <2.9 [*D] rotation period RPs: 22.27 ± 0.01 h [B22n]