(8026) Johnmckay

--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, Hungaria orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.925339521 AU orbital period P: 2.671586196 yr (= 975.7968581 d) eccentricity e: 0.07492829 perihelion distance q: 1.78107713 AU aphelion distance Q: 2.069601917 AU inclination i: 19.932288° argument of perihelion ω: 145.807757° ascending node Ω: 217.736260° mean anomaly M: 98.495429° perihelion passage TP: 2013 Aug 29.0235 Epoch: 2014 May 23 data arc: 1989-2014 (659 obs.) Earth MOID: 0.7992 AU Jupiter Tisserand invariant TJ: 3.843 orbital data, secondary: semimajor axis as: ? orbital period Ps: ? eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 14.8 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 1.69 ± 0.24 km [M11b] geometric albedo: 0.815 ± 0.196 [M11b] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 230 km [*E] other data, primary: diameter dp: 1.69 ± 0.24 km [M11b] rotation period RPp: 372 ± 5 h [W11a] amplitude in mag., rotational ΔM: 0.12 [W10e] amplitude in mag., mutual events ΔM: 0.40 [W10e] pole direction Β, λ: ? , ? other data, secondary: diameter ds: ? diameter ratio ds/dp: ? component mag. difference ΔM: ? rotation period RPs: 2.300 ± 0.001 h [W10e]