(311066) 2004 DC

Asteroids with Satellites Database--Johnston's Archive

(311066) 2004 DC

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: NEA, Apollo (PHA)
orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 1.633837569 AU
orbital period P: 2.088437677 yr
(= 762.801862 d)
eccentricity e: 0.399466431
perihelion distance q: 0.981174307 AU
aphelion distance Q: 2.286500832 AU
inclination i: 19.4490689°
argument of perihelion ω: 156.211804°
ascending node Ω: 74.9614070°
mean anomaly M: 302.703634°
perihelion passage T_P: 2014 Sep 21.40492
Epoch: 2014 May 23
data arc: 2004-2013 (224 obs.)
Earth MOID: 0.00874797 AU
Jupiter Tisserand invariant T_J: 4.154

orbital data, secondary:

semimajor axis a_s: 0.75 ± 0.045 km [F12a]
separation/primary radius a_s/r_p: 4.2 [*D]
separation/Hill radius a_s/r_H: 0.028 [*D]
orbital period P_s: 0.96 d [T08a]
eccentricity e_s: 0.24 [T08a]
normalized ang. mom. α_L: ?

other data, system (combined):

absolute mag. H: 18.1 [MPC]
18.05 ± 0.54 [JPL]
slope parameter G: (0.15) [*A]
effective diameter d_E: 0.37 km [*D]
geometric albedo: 0.74 [*E]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 3.59x10¹⁰ kg [F12a]
density ρ: 1.73 ± 0.49 g/cm³[C12a]
Hill radius r_H: 27 km [*D]
other data, primary:

diameter d_p: 0.36 km [T08a]
rotation period RP_p: 2.6 h [T08a]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?

other data, secondary:

diameter d_s: 0.07 km [*D]
diameter ratio d_s/d_p: 0.2 [T08a]
component mag. difference ΔM: 3.5 [*D]
rotation period RP_s: 7 h [T08a]

-- (311066) 2004 DC --discovery and notes:

Primary discovered 2004 Feb 16 from Socorro, New Mexico, USA by LINEAR. Permanent number assigned 2012 Jan 09.

Companion discovered 2006 Jun 02 using radar observations. Announced 2006 Jun 02.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

Busch, M., Jacobson, S. A., Benner, L., Brozovic, M., Howell, E. S., Margot, J., Naidu, S., Shepard, M. K., & Taylor, P. A. 2013, AGU Fall Meeting Abstracts A Lower Size Limit for Near-Earth Asteroid Satellites
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical Journal The Role of Kozai Cycles in Near-Earth Binary Asteroids
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical Journal Binary Asteroid Encounters with Terrestrial Planets: Timescales and Effects
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical Journal Near-Earth Binaries and Triples: Origin and Evolution of Spin-Orbital Properties
Taylor, Patrick Alan 2009, Ph.D. Thesis Tidal interactions in binary asteroid systems
Taylor, P. A., Margot, J. L., Nolan, M. C., Benner, L. A. M., Ostro, S. J., Giorgini, J. D., & Magri, C. 2008, LPI Contributions The Shape, Mutual Orbit, and Tidal Evolution of Binary Near-Earth Asteroid 2004 DC
Taylor, Patrick A., Margot, J. L., Nolan, M. C., Benner, L. A., Ostro, S. J., Giorgini, J. D., & Magri, C. 2006, Bulletin of the American Astronomical Society Radar Imaging of Binary Near-Earth Asteroid 2004 DC
Taylor, P. A., Margot, J. L., Nolan, M. C., Benner, L. A. M., Ostro, S. J., Giorgini, J. D., & Magri, C. 2006, Central Bureau Electronic Telegrams 2004 DC

© 2006-2012, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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