Asteroids with Satellites Database--Johnston's Archive

2001 RZ143

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: 44.125 AU
orbital period P: 293.110 yr
(= 107058.5 d)
eccentricity e: 0.06517
perihelion distance q: 41.2489 AU
aphelion distance Q: 47.000 AU
inclination i: 2.12632°
argument of perihelion ω: 34.41°
ascending node Ω: 8.3809°
mean anomaly M: 354.16°
perihelion passage TP: 2019 Feb 23
Epoch: 2014 May 23
data arc: 2001-2012 (31 obs.)
Earth MOID: 40.2569 AU
Jupiter Tisserand invariant TJ: 5.926
Neptune Tisserand invariant TN:3.10 [*D]


orbital data, secondary:
semimajor axis as: 1560 ± 30 km (separation) [G12b]
separation/primary radius as/rp:29 [*E]
separation/Hill radius as/rH:0.0045 [*E]
orbital period Ps: 17 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 6.5 [MPC]
6.69 ± 0.13 [V12a]
slope parameter G: (0.15) [*A]
effective diameter dE: 140 ± 39/33 km [V12a]
geometric albedo: 0.191 ± 0.066/0.045 [V12a]
color index U-B: ?
color index B-V: 1.08 [S09b]
color index V-R:0.51 ± 0.13 [S09b]
color index B-R:1.59 ± 0.12 [S09b]
color index V-I:1 ± 0.12 [S09b]
taxonomic type: ?
mass m: ?
density ρ: (1 g/cm3) [*A]
Hill radius rH: 340000 km [*E]

other data, primary:
diameter dp: 108 km [*D]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 90 km [*D]
diameter ratio ds/dp: 0.832 [G12b]
component mag. difference ΔM: 0.1 ± 0.3 [N08c]
rotation period RPs: ?

-- 2001 RZ143 --discovery and notes:

Primary discovered 2001 Sep 12 from Kitt Peak Observatory, Arizona, USA by M. W. Buie.

Companion discovered 2005 Sep 04 using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2007 Mar 14.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


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