(53453) 1999 XX135

--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: 1.9485943601 AU orbital period P: 2.7201344083 yr (= 993.5290926 d) eccentricity e: 0.0787781376 perihelion distance q: 1.7950877254 AU aphelion distance Q: 2.1021009948 AU inclination i: 17.87658661° argument of perihelion ω: 157.4512312° ascending node Ω: 269.85268776° mean anomaly M: 268.0606841° perihelion passage TP: 2024 May 23.734403 Epoch: 2023 Sep 13 data arc: 1982-2023 (1716 obs.) Earth MOID: 0.815851 AU Jupiter Tisserand invariant TJ: 3.832 orbital data, secondary: semimajor axis as: 4.3 km [*E] separation/primary radius as/rp: 2.8 [*E] separation/Hill radius as/rH: 0.009 [*E] orbital period Ps: 0.5205 ± 0.0002 d [W23f] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 15.06 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 3.2 km [*E] geometric albedo: (0.16 ) [*A] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 460 km [*E] other data, primary: diameter dp: 3.0 km [*E] rotation period RPp: 3.4047 ± 0.0003 h [W23f] amplitude in mag., rotational ΔM: 0.32 [W23f] amplitude in mag., mutual events ΔM: 0.31 [W23f] pole direction Β, λ: ? , ? other data, secondary: diameter ds: >1.1 km [*E] diameter ratio ds/dp: >0.36 ± 0.03 [W23f] component mag. difference ΔM: <2.2 ± 0.2 [*D] rotation period RPs: ?