Asteroids with Satellites Database--Johnston's Archive

(119979) 2002 WC19

compiled by Wm. Robert Johnston
last updated 31 January 2015

--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: 48.18208731 AU
orbital period P: 334.454172 yr
(= 122159.3863 d)
eccentricity e: 0.265488923
perihelion distance q: 35.39027683 AU
aphelion distance Q: 60.9738978 AU
inclination i: 9.167425238°
argument of perihelion ω: 43.54515038°
ascending node Ω: 109.7773096°
mean anomaly M: 314.8902475°
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:3.034 [*D]


orbital data, secondary:
semimajor axis as: 4090 ± 90 km [G14a]
separation/primary radius as/rp:18.6 [*D]
separation/Hill radius as/rH:0.0039 [*D]
orbital period Ps: 8.403 ± 0.001 d [G14a]
eccentricity es: 0.2 ± 0.05 [G14a]
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: 7.7x1019 ± 5x1018 kg [G14a]
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:

--Links, less technical:

--Links to ADS abstracts:


© 2007-2014, 2015 by Wm. Robert Johnston.
Last modified 31 January 2015.
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