(3658) Feldman

--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: 2.18630920337 AU orbital period P: 3.23277572795 yr (= 1180.77133464 d) eccentricity e: 0.06447748202 perihelion distance q: 2.045341491 AU aphelion distance Q: 2.32727691573 AU inclination i: 4.012998316° argument of perihelion ω: 107.30660988° ascending node Ω: 320.34759536° mean anomaly M: 325.65309937° perihelion passage TP: 2025 Feb 06.6550992 Epoch: 2024 Oct 17 data arc: 1955-2024 (7956 obs.) Earth MOID: 1.06334 AU Jupiter Tisserand invariant TJ: 3.671 orbital data, secondary: semimajor axis as: 29 km [*E] separation/primary radius as/rp: 12 [*E] separation/Hill radius as/rH: 0.038 [*E] orbital period Ps: 4.633 ± 0.008 d [B24v] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 13.67 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 5.02 ± 0.12 km [M19a] geometric albedo: 0.335 ± 0.015 [M19a] color index U-B: ? color index B-V: ? taxonomic type: S (SMASSII) [B02e] mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 770 km [*E] other data, primary: diameter dp: 4.77 ± 0.11 km [*D] axial ratios a/b, b/c: 1.1, ? [*E] rotation period RPp: 3.4545 ± 0.0002 h [B24v] amplitude in mag., rotational ΔM: 0.09 [B24v] amplitude in mag., mutual events ΔM: 0.11 [B24v] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 1.57 ± 0.10 km [*D] diameter ratio ds/dp: 0.33 ± 0.02 [B24v] component mag. difference ΔM: 2.41 ± 0.13 [*D] rotation period RPs: ?