2013 FY27

--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, scattered disk orbital data, primary (osculating elements) [JPL] : semimajor axis a: 58.9004 AU orbital period P: 452.041 yr (= 165111 d) eccentricity e: 0.39364 perihelion distance q: 35.715 AU aphelion distance Q: 82.09 AU inclination i: 33.01929° argument of perihelion ω: 138.7° ascending node Ω: 187.1453° mean anomaly M: 213.3° perihelion passage TP: 2202 May 31 Epoch: 2018 Mar 23 data arc: 2013-2018 (19 obs.) Earth MOID: 34.7719 AU Jupiter Tisserand invariant TJ: 5.275 Neptune Tisserand invariant TN: 2.668 [*D] orbital data, secondary: semimajor axis as: 9800 km (separation) [S18h] orbital period Ps: 15 d [*E] eccentricity es: ? normalized ang. mom. αL: ?

other data, system (combined): absolute mag. H: 3 [MPC] 3.15 ± 0.03 [S18h] slope parameter G: (0.15) [*A] effective diameter dE: 765 ± 80/85 km [S18h] geometric albedo: 0.17 ± 0.045/0.03 [S18h] color index U-B: ? color index B-V: ? color index V-R: 0.56 ± 0.03 [S18h] color index V-I: 1.08 ± 0.05 [S18h] taxonomic type: ? mass m: ? density ρ: (1.6 g/cm3) [*A] Hill radius rH: 3400000 km [*E] other data, primary: diameter dp: 740 ± 85/90 km [S18h] rotation period RPp: ? amplitude in mag., rotational ΔM: <0.06 [S18h] pole direction Β, λ: ? , ? other data, secondary: diameter ds: 190 km [S18h] diameter ratio ds/dp: 0.25 ± 0.03 [*D] component mag. difference ΔM: 3 ± 0.2 [S18h] rotation period RPs: ?