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Asteroids with Satellites Database--Johnston's Archive

(276049) 2002 CE26

compiled by Wm. Robert Johnston
last updated20 September 2014

--Orbital and physical data--

(Seethis page for definitions of quantities; source codes in brackets, seethis 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 axisa:	2.234038734 AU
orbital periodP:	3.33921398 yr (= 1219.647908 d)
eccentricitye:	0.559245640
perihelion distanceq:	0.984662312 AU
aphelion distanceQ:	3.483415156 AU
inclinationi:	47.2879520°
argument of perihelionω:	228.058388°
ascending nodeΩ:	161.9275722°
mean anomalyM:	315.838480°
perihelion passageT_P:	2014 Oct 19.6152
Epoch:	2014 May 23
data arc:	2001-2013(960 obs.)
Earth MOID:	0.100433 AU
Jupiter Tisserand invariantT_J:	3.066

orbital data, secondary:

binary dynamical type:	A [P07f]
semimajor axisa_s:	4.7± 0.2 km[S06a]
separation/primary radiusa_s/r_p:	2.7 [*D]
separation/Hill radiusa_s/r_H:	0.021 [*D]
orbital periodP_s:	0.65± 0.004d [S06a]
eccentricitye_s:	0.00± 0.02[S06a]
inclinationi_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 parameterG:	0.25 [S06a]
effective diameterd_E:	3.46± 0.35 km [S06a]
geometric albedo:	0.071± 0.022[M11b]
color indexU-B:	?
color indexB-V:	?
taxonomic type:	C (Tholen) [JPL]
massm:	1.95x10¹³ ± 2.5x10¹²kg [S06a]
densityρ:	0.9± 0.5/0.4 g/cm³[S06a]
Hill radiusr_H:	220 km [*D]

other data, primary:

diameterd_p:	3.46± 0.35 km [S06a]
dimensions:	3.65 x 3.65 x 3.26km [S06a]
volume:	21.7± 0.65[S06a]
rotation periodRP_p:	3.2931± 0.0003h [S06a]
amplitude in mag., rotationalΔM:	?
pole directionΒ, λ:	317 ± 10°,-20 ± 15° [S06a]

other data, secondary:

diameterd_s:	0.3± 0.1km [S06a]
diameter ratiod_s/d_p:	0.087± 0.03 [*D]
component mag. differenceΔM:	5.3 [* D]
rotation periodRP_s:	?

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

Primary discovered2002 Feb 10from Socorro, New Mexico, USAby LINEAR.Linked to prediscovery observations from 2001 Dec 26.Permanent number assigned 2011 May 17.

Companion discovered2004 Aug 30usingradar observations.Announced2004 Sep 04.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

Fang, Julia & Margot, Jean-Luc 2012, The Astronomical JournalThe Role of Kozai Cycles in Near-Earth Binary Asteroids
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical JournalBinary Asteroid Encounters with Terrestrial Planets: Timescales and Effects
Fang, Julia & Margot, Jean-Luc 2012, The Astronomical JournalNear-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, IcarusRadar 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 SocietyRadar 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 Circulars2002 CE26

©2004-2011, 2014by Wm. Robert Johnston.
Last modified20 September 2014.
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