Asteroids with Satellites Database--Johnston's Archive

2005 VZ122

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, Cubewano

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 41.497 AU
orbital period P: 267.321 yr
(= 97639.2 d)
eccentricity e: 0.18241
perihelion distance q: 33.927 AU
aphelion distance Q: 49.067 AU
inclination i: 12.0966°
argument of perihelion ω: 181.26°
ascending node Ω: 221.9260°
mean anomaly M: 24.72°
perihelion passage TP: 1996 Jan 13
Epoch: 2014 May 23
data arc: 2005-2008 (17 obs.)
Earth MOID: 32.9353 AU
Jupiter Tisserand invariant TJ: 5.555
Neptune Tisserand invariant TN:2.98 [*D]

orbital data, secondary:
semimajor axis as: 2300 ± 300 km (separation) [G12b]
separation/primary radius as/rp:37 [*E]
separation/Hill radius as/rH:0.0081 [*E]
orbital period Ps: 30 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 7.6 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 133 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: 290000 km [*E]

other data, primary:
diameter dp: 124 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 49 km [*E]
diameter ratio ds/dp: 0.398 [G12b]
component mag. difference ΔM: 2.00 [G12b]
rotation period RPs: ?

-- 2005 VZ122 --discovery and notes:

Primary discovered 2005 Nov 02 from Kitt Peak Observatory, Arizona, USA by ?.

Companion discovered 2008 Sep 25 using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2011.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

© 2011-2013, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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