Asteroids with Satellites Database--Johnston's Archive

2006 WF206

compiled by Wm. Robert Johnston
last updated 9 October 2021

--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, Cubewano


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 43.2446 AU
orbital period P: 284.385 yr
(= 103872 d)
eccentricity e: 0.05054
perihelion distance q: 41.059 AU
aphelion distance Q: 45.43 AU
inclination i: 2.05562°
argument of perihelion ω: 191.16°
ascending node Ω: 58.016°
mean anomaly M: 260.95°
perihelion passage TP: 2099 Sep 30
Epoch: 2021 Jul 01
data arc: 2006-2021 (24 obs.)
Earth MOID: 40.0453 AU
Jupiter Tisserand invariant TJ: 5.875
Neptune Tisserand invariant TN:3.089 [*D]


orbital data, secondary:
semimajor axis as: 2100 km (separation) [P20g]
separation/primary radius as/rp:27.2 [*E]
separation/Hill radius as/rH:0.0040 [*E]
orbital period Ps: 15 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 6.65 [MPC]
6.24 [P20g]
slope parameter G: (0.15) [*A]
effective diameter dE: 206 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: 530000 km [*E]

other data, primary:
diameter dp: 154 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 136 km [*E]
diameter ratio ds/dp: 0.88 [*D]
component mag. difference ΔM: 0.27 [P20g]
rotation period RPs: ?

-- 2006 WF206 --discovery and notes:

Primary discovered 2006 Nov 23 from Mauna Kea Observatory, Hawaii, USA by B. Gladman.

Companion discovered 2020 Feb 12 by A. H. Parker, et al., and the Solar System Origins Legacy Survey using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2020.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2021 by Wm. Robert Johnston.
Last modified 9 October 2021.
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