(276049) 2002 CE26

Asteroids with Satellites Database--Johnston's Archive

(276049) 2002 CE26

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
orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.234038734 AU
orbital period P: 3.33921398 yr
(= 1219.647908 d)
eccentricity e: 0.559245640
perihelion distance q: 0.984662312 AU
aphelion distance Q: 3.483415156 AU
inclination i: 47.2879520°
argument of perihelion ω: 228.058388°
ascending node Ω: 161.9275722°
mean anomaly M: 315.838480°
perihelion passage T_P: 2014 Oct 19.6152
Epoch: 2014 May 23
data arc: 2001-2013 (960 obs.)
Earth MOID: 0.100433 AU
Jupiter Tisserand invariant T_J: 3.066

orbital data, secondary:

binary dynamical type: A [P07f]
semimajor axis a_s: 4.7 ± 0.2 km [S06a]
separation/primary radius a_s/r_p: 2.7 [*D]
separation/Hill radius a_s/r_H: 0.021 [*D]
orbital period P_s: 0.65 ± 0.004 d [S06a]
eccentricity e_s: 0.00 ± 0.02 [S06a]
inclination i_s: 22.5° ± 22.5° [S06a]
normalized ang. mom. α_L: 1.18 [P07f]

other data, system (combined):

absolute mag. H: 16.8 [MPC]
16.774 ± 0.567 [JPL]
slope parameter G: 0.25 [S06a]
effective diameter d_E: 3.46 ± 0.35 km [S06a]
geometric albedo: 0.071 ± 0.022 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: C (Tholen) [JPL]
mass m: 1.95x10¹³ ± 2.5x10¹² kg [S06a]
density ρ: 0.9 ± 0.5/0.4 g/cm³[S06a]
Hill radius r_H: 220 km [*D]
other data, primary:

diameter d_p: 3.46 ± 0.35 km [S06a]
dimensions : 3.65 x 3.65 x 3.26km [S06a]
volume : 21.7± 0.65[S06a]
rotation period RP_p: 3.2931 ± 0.0003 h [S06a]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: 317 ± 10° , -20 ± 15° [S06a]

other data, secondary:

diameter d_s: 0.3 ± 0.1 km [S06a]
diameter ratio d_s/d_p: 0.087 ± 0.03 [*D]
component mag. difference ΔM: 5.3 [* D]
rotation period RP_s: ?

-- (276049) 2002 CE26 --discovery and notes:

Primary discovered 2002 Feb 10 from Socorro, New Mexico, USA by LINEAR. Linked to prediscovery observations from 2001 Dec 26. Permanent number assigned 2011 May 17.

Companion discovered 2004 Aug 30 using radar observations. Announced 2004 Sep 04.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

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
Shepard, Michael K., Margot, Jean-Luc, Magri, Christopher, Nolan, Michael C., Schlieder, Joshua, Estes, Benjamin, Bus, Schelte J., Volquardsen, Eric L., Rivkin, Andrew S., Benner, Lance A. M., Giorgini, Jon D., Ostro, Steven J., & Busch, Michael W. 2006, Icarus Radar and infrared observations of binary near-Earth Asteroid 2002 CE26
Schlieder, J. E., Shepard, M. K., Nolan, M., Benner, L. A. M., Ostro, S. J., Giorgini, J. D., & Margot, J. L. 2004, Bulletin of the American Astronomical Society Radar Observations of Binary Asteroid 2002 CE26
McGaha, J. E., Blythe, M., Shelly, F., Bezpalko, M., Huber, R., Manguso, L., Adams, S., Piscitelli, J., Stuart, J., Sayer, R., Evans, J. B., Viggh, H., Shelus, P. J., & Marsden, B. G. 2002, Minor Planet Electronic Circulars 2002 CE26

© 2004-2011, 2014 by Wm. Robert Johnston.
Last modified 20 September 2014.
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