(549328) 2011 GO27

--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 orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.8553479217 AU orbital period P: 2.5272385955 yr (= 923.073897 d) eccentricity e: 0.4715837301 perihelion distance q: 0.980396028 AU aphelion distance Q: 2.7302998153 AU inclination i: 6.66508° argument of perihelion ω: 95.884675° ascending node Ω: 336.778459° mean anomaly M: 354.8097811° perihelion passage TP: 2025 Dec 04.3082100 Epoch: 2025 Nov 21 data arc: 2011-2026 (1453 obs.) Earth MOID: 0.102771 AU Jupiter Tisserand invariant TJ: 3.851 orbital data, secondary: semimajor axis as: ? orbital period Ps: ? eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 18.96 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 0.54 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: 41 km [*E] other data, primary: diameter dp: 0.54 km [*E] axial ratios a/b, b/c: 1.1, ? [*E] rotation period RPp: 2.59608 ± 0.00005 h [P26a] amplitude in mag., rotational ΔM: 0.12 [P26a] pole direction Β, λ: ? , ? other data, secondary: diameter ds: ? diameter ratio ds/dp: ? component mag. difference ΔM: ? rotation period RPs: ?