2004 KH19

--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: TNO orbital data, primary (osculating elements) [JPL] : semimajor axis a: 40.761 AU orbital period P: 260.242 yr (= 95053.2 d) eccentricity e: 0.11906 perihelion distance q: 35.908 AU aphelion distance Q: 45.614 AU inclination i: 35.2592° argument of perihelion ω: 226.10° ascending node Ω: 232.96092° mean anomaly M: 133.55° perihelion passage TP: 1917 Nov 05 Epoch: 2014 May 23 data arc: 2004-2009 (20 obs.) Earth MOID: 35.0112 AU Jupiter Tisserand invariant TJ: 4.666 Neptune Tisserand invariant TN: 2.63 [*D] orbital data, secondary: semimajor axis as: 13000 km (separation) [S12b] separation/primary radius as/rp: 150 [*E] separation/Hill radius as/rH: 0.027 [*E] orbital period Ps: 210 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 6.5 [MPC] slope parameter G: (0.15) [*A] effective diameter dE: 221 km [*E] geometric albedo: (0.09 ) [*A] color index U-B: ? color index B-V: ? taxonomic type: ? mass m: ? density ρ: (1 g/cm3) [*A] Hill radius rH: 480000 km [*E] other data, primary: diameter dp: 179 km [*E] rotation period RPp: ? amplitude in mag., rotational ΔM: ? pole direction Β, λ: ? , ? other data, secondary: diameter ds: 129 km [*E] diameter ratio ds/dp: 0.721 [S12b] component mag. difference ΔM: 0.72 [S12b] rotation period RPs: ?