(285571) 2000 PQ9

--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: 1.9039009231 AU orbital period P: 2.6270389785 yr (= 959.5441091 d) eccentricity e: 0.431968771 perihelion distance q: 1.081475182 AU aphelion distance Q: 2.7263266641 AU inclination i: 13.4765408° argument of perihelion ω: 6.935496° ascending node Ω: 297.2124165° mean anomaly M: 350.321809° perihelion passage TP: 2021 Jul 26.796253 Epoch: 2021 Jul 01 data arc: 2000-2021 (4421 obs.) Earth MOID: 0.067072 AU Jupiter Tisserand invariant TJ: 3.794 orbital data, secondary: semimajor axis as: ? orbital period Ps: ? eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 17.6 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 1.4 ± 0.78/0.38 km [N21c] geometric albedo: 0.041 ± 0.038/0.024 [N21c] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 118 km [*E] other data, primary: diameter dp: 1.4 ± 0.78/0.38 km [N21c] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: ? diameter ratio ds/dp: ? component mag. difference ΔM: ? rotation period RPs: ?