(46829) McMahon

--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: 2.401611438 AU orbital period P: 3.721809284 yr (= 1359.416515 d) eccentricity e: 0.179730048 perihelion distance q: 1.9699697 AU aphelion distance Q: 2.833253177 AU inclination i: 5.5930416° argument of perihelion ω: 25.828408° ascending node Ω: 334.932797° mean anomaly M: 116.550093° perihelion passage TP: 2013 Sep 24.888553 Epoch: 2014 Dec 09 data arc: 1987-2015 (816 obs.) Earth MOID: 0.968347 AU Jupiter Tisserand invariant TJ: 3.497 orbital data, secondary: semimajor axis as: 5.4 km [*E] separation/primary radius as/rp: 3.5 [*E] separation/Hill radius as/rH: 0.011 [*E] orbital period Ps: 0.70138 ± 0.00008 d [P15e] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 15 [MPC] 15.25 ± 0.03 [P15e] slope parameter G: 0.3 [P15e] effective diameter dE: 3.3 km [*E] geometric albedo: (0.16 ) [*A] color index U-B: ? color index B-V: ? color index V-R: 0.47 ± 0.016 [P15e] taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 480 km [*E] other data, primary: diameter dp: 3.06 km [*E] rotation period RPp: 2.6236 ± 0.0003 h [P15e] amplitude in mag., rotational ΔM: 0.12 [P15e] amplitude in mag., mutual events ΔM: 0.26 ±0.1 [P15e] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 1.22 km [*E] diameter ratio ds/dp: 0.4 ± 0.02 [P15e] component mag. difference ΔM: 2.0 [*D] rotation period RPs: ?