(6245) Ikufumi

--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 orbital data, primary (osculating elements) [JPL] : semimajor axis a: 2.3018535357 AU orbital period P: 3.492340093 yr (= 1275.6013102 d) eccentricity e: 0.178136874 perihelion distance q: 1.891808543 AU aphelion distance Q: 2.7118985286 AU inclination i: 8.0151998° argument of perihelion ω: 52.500066° ascending node Ω: 299.724245° mean anomaly M: 85.7835° perihelion passage TP: 2018 Jun 27.040153 Epoch: 2019 Apr 27 data arc: 1954-2018 (1711 obs.) Earth MOID: 0.896576 AU Jupiter Tisserand invariant TJ: 3.557 orbital data, secondary: semimajor axis as: 13 km [*E] separation/primary radius as/rp: 3.3 [*E] separation/Hill radius as/rH: 0.009 [*E] orbital period Ps: 0.6433 ± 0.0002 d [B18j] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 13.2 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 8.10 ± 0.15 km [M11b] geometric albedo: 0.129 ± 0.025 [M11b] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 1400 km [*E] other data, primary: diameter dp: 7.89 ± 0.15 km [*D] rotation period RPp: 2.9222 ± 0.0001 h [B18j] amplitude in mag., rotational ΔM: 0.1 [B18j] amplitude in mag., mutual events ΔM: 0.07 ±0.01 [B18j] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 1.89 ± 0.17 km [*D] diameter ratio ds/dp: 0.23 ± 0.02 [B18j] component mag. difference ΔM: 3.2 ± 0.2 [*D] rotation period RPs: ?