Asteroids with Satellites Database--Johnston's Archive

2006 SF369

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, 1:3 resonance

orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 62.893 AU
orbital period P: 498.8 yr
(= 182181 d)
eccentricity e: 0.3779
perihelion distance q: 39.128 AU
aphelion distance Q: 86.658 AU
inclination i: 27.6167°
argument of perihelion ω: 290.30°
ascending node Ω: 95.3019°
mean anomaly M: 16.21°
perihelion passage TP: 1991 Dec 05
Epoch: 2014 May 23
data arc: 2005 Sep-2007 Nov (40 obs.)
Earth MOID: 38.2335 AU
Jupiter Tisserand invariant TJ: 5.787
Neptune Tisserand invariant TN:2.85 [*D]

orbital data, secondary:
semimajor axis as: 3120 ± 80 km (separation) [G12b]
separation/primary radius as/rp:43 [*E]
separation/Hill radius as/rH:0.0067 [*E]
orbital period Ps: 28 d [*E]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 6.7 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 201 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: 470000 km [*E]

other data, primary:
diameter dp: 144 km [*E]
rotation period RPp: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:
diameter ds: 141 km [*E]
diameter ratio ds/dp: 0.977 ± 0.023 [N08b]
component mag. difference ΔM: 0.005 ± 0.005 [N08b]
rotation period RPs: ?

-- 2006 SF369 --discovery and notes:

Primary discovered 2006 Sep 30 from Apache Point Observatory, New Mexico, USA by A. C. Becker, A. W. Puckett, and J. Kubica. Linked to prediscovery observations from 2005 Sep 22.

Companion discovered 2007 Nov 13 by K. S. Noll, S. D. Kern, W. M. Grundy, H. F. Levison, and E. A. Barker using Hubble Space Telescope observations from Hubble Space Telescope. Announced 2008 Feb 19 [N08b].

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

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