(3122) Florence

--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 (PHA) orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.7691324495 AU orbital period P: 2.353100752 yr (= 859.4862821 d) eccentricity e: 0.4233003677 perihelion distance q: 1.020258033 AU aphelion distance Q: 2.518006866 AU inclination i: 22.1507767° argument of perihelion ω: 27.8469801° ascending node Ω: 336.0951331° mean anomaly M: 351.4385166° perihelion passage TP: 2017 Sep 24.4402154 Epoch: 2017 Sep 04 data arc: 1979-2017 (2661 obs.) Earth MOID: 0.0443047 AU Jupiter Tisserand invariant TJ: 3.92 orbital data, secondary: semimajor axis as: 4.6 km [*E] separation/primary radius as/rp: 2.09 [*E] separation/Hill radius as/rH: 0.012 [*E] orbital period Ps: 0.3 d [B17c] eccentricity es: ? normalized ang. mom. αL: ? orbital data, tertiary: semimajor axis as: 9.8 km [*E] separation/primary radius as/rp: 4.45 [*E] separation/Hill radius as/rH: 0.026 [*E] orbital period Ps: 1.02 ± 0.1 d [B17c] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 14.1 [MPC] slope parameter G: 0.29 [P12c] effective diameter dE: 4.40 ± 0.03 km [M11d] geometric albedo: 0.231 ± 0.049 [M11d] color index U-B: ? color index B-V: ? taxonomic type: S (SMASSII) [JPL] mass m: 7.9x1013 ± 2x1012 kg [B18n] density ρ: 2 g/cm3[B18n] Hill radius rH: 380 km [*E] other data, primary: diameter dp: 4.4 ± 0.03 km [M11b] rotation period RPp: 2.3581 ± 0 h [W16b] amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 0.2 km [B18n] diameter ratio ds/dp: 0.045 [*D] component mag. difference ΔM: 6.7 [*D] rotation period RPs: ? other data, tertiary: diameter ds: 0.3 km [B18n] diameter ratio ds/dp: 0.068 [*D] component mag. difference ΔM: 5.8 [*D] rotation period RPs: ?