(51356) 2000 RY76

--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: Mars crossing asteroid, Hungaria orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.811797578 AU orbital period P: 2.438780504 yr (= 890.7645791 d) eccentricity e: 0.11163368 perihelion distance q: 1.60953994 AU aphelion distance Q: 2.014055215 AU inclination i: 22.2100003° argument of perihelion ω: 36.189020° ascending node Ω: 331.208187° mean anomaly M: 248.937572° perihelion passage TP: 2015 Feb 21.80688 Epoch: 2014 May 23 data arc: 1975-2012 (669 obs.) Earth MOID: 0.622486 AU Jupiter Tisserand invariant TJ: 3.958 orbital data, secondary: semimajor axis as: 13 km [*E] separation/primary radius as/rp: 8.0 [*E] separation/Hill radius as/rH: 0.032 [*E] orbital period Ps: 2.585 ± 0.002 d [W13f] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 15 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 3.3 km [*E] geometric albedo: (0.16 ) [*A] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 410 km [*E] other data, primary: diameter dp: 3.23 km [*E] rotation period RPp: 2.5572 ± 0.0001 h [W13f] amplitude in mag., rotational ΔM: 0.09 ± 0.01 [W13f] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 0.68 km [*E] diameter ratio ds/dp: >0.21 ± 0.02 [W13f] component mag. difference ΔM: <3.4 ± 0.2 [*D] rotation period RPs: ?