(134421) 1998 QT2

--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: 2.62814554915 AU orbital period P: 4.2607134 yr (= 1556.22556934 d) eccentricity e: 0.1863195258 perihelion distance q: 2.1384707167 AU aphelion distance Q: 3.11782038163 AU inclination i: 27.284583901° argument of perihelion ω: 305.95448756° ascending node Ω: 327.08782306° mean anomaly M: 128.37489281° perihelion passage TP: 2023 Oct 28.0547482 Epoch: 2025 May 05 data arc: 1998-2025 (2159 obs.) Earth MOID: 1.20157 AU Jupiter Tisserand invariant TJ: 3.221 orbital data, secondary: semimajor axis as: 17.4 km (separation) [H25f] separation/primary radius as/rp: 5.4 [*D] separation/Hill radius as/rH: 0.0163 [*D] orbital period Ps: 1.4 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 14.77 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 7.60 ± 0.11 km [M19a] geometric albedo: 0.045 ± 0.005 [M19a] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 1100 km [*E] other data, primary: diameter dp: 6.4 km [*D] dimensions : 7.0 x 5.9 km [H25f] axial ratios a/b, b/c: 1.2, ? [*D] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 1.3 km [*D] dimensions : 1.8 x 1.0 km [H25f] axial ratios a/b, b/c: 1.8; ? [*D] diameter ratio ds/dp: 0.20 [*D] component mag. difference ΔM: 3.5 [*D] rotation period RPs: ?