2006 CH69

Asteroids with Satellites Database--Johnston's Archive

2006 CH69

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: 46.04485471 AU
orbital period P: 312.4495206 yr
(= 114122.1874 d)
eccentricity e: 0.042015228
perihelion distance q: 44.11026965 AU
aphelion distance Q: 47.97943976 AU
inclination i: 1.790356688°
argument of perihelion ω: 69.18979167°
ascending node Ω: 41.08341614°
mean anomaly M: 31.41340419°
perihelion passage T_P: 1987 Feb 15
Epoch: 2014 May 23
data arc: 2005-2013 (22 obs.)
Earth MOID: 43.1271 AU
Jupiter Tisserand invariant T_J: 6.054

Neptune Tisserand invariant T_N: 3.125 [*D]

orbital data, secondary:

semimajor axis a_s: 27000 ± 1000 km [G14a]
separation/primary radius a_s/r_p: 540 [*D]
separation/Hill radius a_s/r_H: 0.080 [*D]
orbital period P_s: 1420 ± 10 d [G14a]
eccentricity e_s: 0.896 ± 0.009 [G14a]
inclination i_s: 124° ± 2° [G14a]
ascending node Ω_s: 122° ± 2° [G14a]
argument of pericenter ω_s: 298° ± 3° [G14a]
mean anomaly M: 224° ± 3° [G14a]
Epoch: 2009 Dec 24.6
normalized ang. mom. α_L: ?

other data, system (combined):

absolute mag. H: 6.5 [MPC]
7 [P11a]
slope parameter G: (0.15) [*A]
effective diameter d_E: 129 km [*D]
geometric albedo: 0.23 ± 0.09/0.06 [P11a]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 8x10¹⁷ ± 1x10¹⁷ kg [G14a]
density ρ: (1 g/cm³) [*A]
Hill radius r_H: 340000 km [*D]
other data, primary:

diameter d_p: 100 ± 12/10 km [P11a]
rotation period RP_p: ?
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:

diameter d_s: 82 ± 10/8 km [*D]
diameter ratio d_s/d_p: 0.817 ± 0.019 [P11a]
component mag. difference ΔM: 0.44 ± 0.05 [P11a]
rotation period RP_s: ?

-- 2006 CH69 --discovery and notes:

Primary discovered 2006 Feb 03 from Mauna Kea Observatory, Hawaii, USA by P. A. Wiegert and A. Papadimos. Linked to prediscovery observations from 2005 Feb 10.

Companion discovered 2004 Dec 17 using adaptive optics telescope observations. Announced 2010 Aug 05.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

Parker, Alex H., Kavelaars, J. J., Petit, Jean-Marc, Jones, Lynne, Gladman, Brett, & Parker, Joel 2011, The Astrophysical Journal Characterization of Seven Ultra-wide Trans-Neptunian Binaries
Lin, H.-W., Kavelaars, J. J., Ip, W.-H., Gladman, B. J., Petit, J. M., Jones, R. L., & Parker, Joel W. 2010, Publications of the Astronomical Society of the Pacific On the Detection of Two New Trans-Neptunian Binaries from the CFEPS Kuiper Belt Survey

© 2010-2014, 2015 by Wm. Robert Johnston.
Last modified 31 January 2015.
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