Asteroids with Satellites Database--Johnston's Archive

(523764) 2014 WC510

compiled by Wm. Robert Johnston
last updated 27 May 2019

--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, plutino


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 39.2359 AU
orbital period P: 245.768 yr
(= 89768.4 d)
eccentricity e: 0.247235
perihelion distance q: 29.53539 AU
aphelion distance Q: 48.9364 AU
inclination i: 19.541571°
argument of perihelion ω: 289.1727°
ascending node Ω: 194.46407°
mean anomaly M: 342.9938°
perihelion passage TP: 2032 Jan 09.61
Epoch: 2020 May 31
data arc: 2011-2019 (169 obs.)
Earth MOID: 28.6029 AU
Jupiter Tisserand invariant TJ: 5.148
Neptune Tisserand invariant TN:2.85254077015994 [*D]


orbital data, secondary:
semimajor axis as: 349 ± 26 km (separation) [L20a]
separation/primary radius as/rp:3.9 [*E]
separation/Hill radius as/rH:0.00087 [*E]
orbital period Ps: 0.87 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 7.2 [MPC]
7.2 ± 0.3 [L20a]
slope parameter G: (0.15) [*A]
effective diameter dE: 227 ± 23 km [L20a]
geometric albedo: 0.051 ± 0.017 [L20a]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1 g/cm3) [*A]
Hill radius rH: 400000 km [*E]

other data, primary:
diameter dp: 181 ± 16 km [L20a]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 138 ± 32 km [L20a]
diameter ratio ds/dp: 0.76 ± 0.19 [L20a]
component mag. difference ΔM: 0.60 ± 0.55 [*D]
rotation period RPs: ?

-- (523764) 2014 WC510 --discovery and notes:

Primary discovered 2011 Sep 08 from Haleakala, Hawaii, USA by PanSTARRS 1 program. Permanent number assigned 2018 Sep 25.

Companion discovered 2018 Dec 01 by R. Leiva, M. W. Buie, J. M. Keller, L. H. Wasserman, J. J. Kavelaars, T. Bridges, S. L. Haley, R. Strauss, E. Wilde, R. Weryk, P. Kervella, R. Baker, S. A. Bock, K. Conway, J. M. Cota Jr., J. J. Estes, M. L. Garcia, M. Kehrli, A. McCandless, K. McCandless, E. Self, C. Settlemire, D. J. Swanson, D. Thompson, and J. A. Wise using stellar occultation observations. Announced 2020 Sep 28 [L20a].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2020 by Wm. Robert Johnston.
Last modified 11 October 2020
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