(7563) 1988 BC

--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: 2.67700743782 AU orbital period P: 4.3800853077 yr (= 1599.82615863 d) eccentricity e: 0.22995705234 perihelion distance q: 2.0614106983 AU aphelion distance Q: 3.2926041773 AU inclination i: 12.634275003° argument of perihelion ω: 54.57360226° ascending node Ω: 83.19712805° mean anomaly M: 207.73126862° perihelion passage TP: 2027 Sep 28.6763878 Epoch: 2025 Nov 21 data arc: 1988-2025 (3916 obs.) Earth MOID: 1.103 AU Jupiter Tisserand invariant TJ: 3.306 orbital data, secondary: semimajor axis as: 32 km (separation) [V26a] separation/primary radius as/rp: 4.0 [*E] separation/Hill radius as/rH: 0.013 [*E] orbital period Ps: 0.88 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 12.82 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 15.86 ± 0.1 km [M19a] geometric albedo: 0.078 ± 0.015 [M19a] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 2500 km [*E] other data, primary: diameter dp: 15.86 ± 0.1 km [M19a] rotation period RPp: 6.539 h [JPL] amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 2.0 ± 0.5 km [V26a] diameter ratio ds/dp: 0.126 ± 0.032 [*D] component mag. difference ΔM: 4.5 ± 0.6 [*D] rotation period RPs: ?