Asteroids with Satellites Database--Johnston's Archive

2003 TJ58

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, Cubewano


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 44.64940517 AU
orbital period P: 298.3538995 yr
(= 108973.7618 d)
eccentricity e: 0.090450198
perihelion distance q: 40.61085764 AU
aphelion distance Q: 48.68795269 AU
inclination i: 0.955882479°
argument of perihelion ω: 13.59366469°
ascending node Ω: 37.30221952°
mean anomaly M: 30.02671306°
perihelion passage TP: 1989 Jul 03
Epoch: 2014 May 23
data arc: 2003-2007 (44 obs.)
Earth MOID: 39.6206 AU
Jupiter Tisserand invariant TJ: 5.95
Neptune Tisserand invariant TN:3.100 [*D]


orbital data, secondary:
semimajor axis as: 3840 ± 50 km [G14a]
separation/primary radius as/rp:120 [*D]
separation/Hill radius as/rH:0.019 [*D]
orbital period Ps: 137.68 ± 0.03 d [G14a]
eccentricity es: 0.516 ± 0.009 [G14a]
inclination is:39° ± 2° [G14a]
ascending node Ωs:199° ± 3° [G14a]
argument of pericenter ωs:85° ± 0.7° [G14a]
mean anomaly M:58° ± 2° [G14a]
Epoch:2007 Jul 18.5
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 8 [MPC]
7.448 ± 0.024 [G09a]
slope parameter G: (0.15) [*A]
effective diameter dE: 83 km [*D]
geometric albedo: 0.285 ± 0.125 [G09a]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 2.36x1017 ± 9x1015 kg [G14a]
density ρ: (1 ± 1/0.5 g/cm3) [*A]
Hill radius rH: 210000 km [*D]

other data, primary:
diameter dp: 65 ± 15 km [G09a]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 51 ± 12 km [*D]
diameter ratio ds/dp: 0.787 ± 0.011 [G09a]
component mag. difference ΔM: 0.519 ± 0.031 [G09a]
rotation period RPs: ?

-- 2003 TJ58 --discovery and notes:

Primary discovered 2003 Oct 03 from Mauna Kea Observatory, Hawaii, USA by ?.

Companion discovered 2006 Nov 22 using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2007 Mar 14.

--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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