Asteroids with Satellites Database--Johnston's Archive

(119979) 2002 WC19

compiled by Wm. Robert Johnston
last updated 20 September 2014

--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, 1:2 resonance

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 48.1821 AU
orbital period P: 334.454 yr
(= 122159.4 d)
eccentricity e: 0.265489
perihelion distance q: 35.3903 AU
aphelion distance Q: 60.974 AU
inclination i: 9.16743°
argument of perihelion ω: 43.545°
ascending node Ω: 109.77731°
mean anomaly M: 314.890°
perihelion passage TP: 2056 Apr 19
Epoch: 2014 May 23
data arc: 2001-2012 (102 obs.)
Earth MOID: 34.4073 AU
Jupiter Tisserand invariant TJ: 5.901
Neptune Tisserand invariant TN:3.03 [*D]

orbital data, secondary:
semimajor axis as: 2760 ± 250 km (separation) [N07b]
separation/primary radius as/rp:13 [*E]
separation/Hill radius as/rH:0.0026 [*E]
orbital period Ps: 6 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 4.9 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 461 km [*E]
geometric albedo: (0.09 ) [*A]
color index U-B: ?
color index B-V: 1.14 [S12f]
color index V-R:0.65 ± 0.01 [S12f]
color index B-R:1.79 ± 0.02 [S12f]
color index V-I:1.3 [S12f]
taxonomic type: ?
mass m: ?
density ρ: (1 g/cm3) [*A]
Hill radius rH: 1000000 km [*E]

other data, primary:
diameter dp: 440 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: <0.05 [T14a]
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 139 km [*E]
diameter ratio ds/dp: 0.316 ± 0.059 [N08c]
component mag. difference ΔM: 2.5 [I8814]
rotation period RPs: ?

-- (119979) 2002 WC19 --discovery and notes:

Primary discovered 2002 Nov 16 from Palomar Observatory, California, USA by ?. Linked to prediscovery observations from 2001 Dec 16. Permanent number assigned 2005 Nov 16.

Companion discovered 2006 Nov 05 by K. S. Noll, W. M. Grundy, S. D. Kern, H. F. Levison, and D. C. Stephens using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2007 Feb 27 [N07b].

--Links, more technical:

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--Links to ADS abstracts:

© 2007-2008, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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