2017 YE5

--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: 2.820305 AU orbital period P: 4.736354 yr (= 1729.985 d) eccentricity e: 0.7102765 perihelion distance q: 0.81710844 AU aphelion distance Q: 4.823501 AU inclination i: 6.209782° argument of perihelion ω: 110.768344° ascending node Ω: 103.960299° mean anomaly M: 348.99482° perihelion passage TP: 2018 May 14.885575 Epoch: 2018 Mar 23 data arc: 220 days (306 obs.) Earth MOID: 0.0205924 AU Jupiter Tisserand invariant TJ: 2.875 orbital data, secondary: semimajor axis as: 1.8 km [T19a] separation/primary radius as/rp: 4 [*E] separation/Hill radius as/rH: 0.029 [*E] orbital period Ps: 0.92 ± 0.08 d [W18a] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 19.3 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 1.3 km [*D] geometric albedo: 0.02 [*D] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: 1 g/cm3[T19a] Hill radius rH: 62 km [*E] other data, primary: diameter dp: 0.9 km [T19a] rotation period RPp: 20.6 ± 0.1 h [W18a] amplitude in mag., rotational ΔM: 0.33 [W18a] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 0.9 km [T19a] diameter ratio ds/dp: 1 [*D] component mag. difference ΔM: 0 [*D] rotation period RPs: ?