(612098) 1999 RM45

--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: NEA, Apollo (PHA) orbital data, primary (osculating elements) [JPL] : semimajor axis a: 1.681249259 AU orbital period P: 2.179958163 yr (= 796.2447572 d) eccentricity e: 0.64414103 perihelion distance q: 0.59828763 AU aphelion distance Q: 2.764210883 AU inclination i: 10.888953° argument of perihelion ω: 88.763528° ascending node Ω: 162.844309° mean anomaly M: 213.380034° perihelion passage TP: 2021 Apr 20.292720 Epoch: 2020 May 31 data arc: 1999-2021 (168 obs.) Earth MOID: 0.00273761 AU Jupiter Tisserand invariant TJ: 3.949 orbital data, secondary: semimajor axis as: 0.29 km [*E] separation/primary radius as/rp: 3.5 [*E] separation/Hill radius as/rH: 0.037 [*D] orbital period Ps: 0.6852 ± 0.0005 d [P21a] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 19.4 [MPC] 19.27 ± 0.13 [P21a] slope parameter G: 0.24 [P21a] effective diameter dE: 0.181 ± 0.057/0.029 km [N18a] geometric albedo: 0.781 ± 0.325/0.342 [N18a] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 8 km [*E] other data, primary: diameter dp: 0.165 ± 0.052/0.027 km [*D] axial ratios a/b, b/c: 1.3, ? [P21a] rotation period RPp: 3.0697 ± 0.0006 h [P21a] amplitude in mag., rotational ΔM: 0.07 [P21a] amplitude in mag., mutual events ΔM: 0.2 [P21a] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 0.074 ± 0.024/0.013 km [*D] diameter ratio ds/dp: 0.45 ± 0.02 [P21a] component mag. difference ΔM: 1.73 ± 0.097 [*D] rotation period RPs: ?