(310560) 2001 QL142

--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, Apollo (PHA) orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.0493912393 AU orbital period P: 1.0750145778 yr (= 392.6490746 d) eccentricity e: 0.49898127 perihelion distance q: 0.52576467 AU aphelion distance Q: 1.5730178126 AU inclination i: 26.606544° argument of perihelion ω: 72.122191° ascending node Ω: 165.576929° mean anomaly M: 243.633819° perihelion passage TP: 2021 Nov 04.919648 Epoch: 2021 Jul 01 data arc: 1974-2017 (213 obs.) Earth MOID: 0.0481568 AU Jupiter Tisserand invariant TJ: 5.654 orbital data, secondary: semimajor axis as: 1.1 km [*E] separation/primary radius as/rp: 3.4 [*E] separation/Hill radius as/rH: 0.041 [*E] orbital period Ps: 0.6496 ± 0.0004 d [P21i] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 17.7 [MPC] 18.07 ± 0.19 [P21i] slope parameter G: (0.24) [*A] effective diameter dE: 0.65 ± 0.17 km [M17c] geometric albedo: 0.313 ± 0.221 [M17c] color index U-B: ? color index B-V: ? color index V-R: 0.428 ± 0.013 [P21i] taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 27 km [*D] other data, primary: diameter dp: 0.65 ± 0.17 km [M17c] rotation period RPp: 2.97387 ± 0.00008 h [P21i] amplitude in mag., rotational ΔM: 0.15 [P21i] pole direction Β, λ: ? , ? other data, secondary: diameter ds: ? diameter ratio ds/dp: ? component mag. difference ΔM: ? rotation period RPs: ?