(136617) 1994 CC

(136617) 1994 CC
compiled by Wm. Robert Johnston
last updated 8 July 2009

Orbital elements and other data (Assumed or derived values in parenthesis, my estimates in italics and parenthesis. Source identifications in brackets, see this link for sources):

orbital data, primary (osculating elements) [JPL]:

semimajor axis a:	1.63899697 AU
orbital period P:	2.0983 y (=766.41792 d)
eccentricity e:	0.41755360
perihelion distance q:	0.95462788 AU
aphelion distance Q:	2.32336606 AU
inclination i:	4.684094°
argument of perihelion omega:	24.74855°
ascending node OMEGA:	325.92982°
mean anomaly M:	350.386911°
perihelion passage TP:	2009-07-08.46568
Epoch:	18 JUN 2009
data arc:	1988-2009 (209 obs.)

orbital data, second component:

semimajor axis a: 0.5 km [VO]
semimajor axis/primary radius a/Rp: (1.5)
orbital period P: (~5 h?)
eccentricity e: ?

orbital data, third component:

semimajor axis a: 1.2 km [VO]
semimajor axis/primary radius a/Rp: (3.7)
orbital period P: (~20 h?)
eccentricity e: ?

other data, primary:

diameter:	0.65 km [I9053]
absolute magnitude H:	17.671 ± 0.475 [JPL]
rotation period:	2.3886 h [I9053]
amplitude delta M:	0.09 [I9053]
color index B-V:	?
color index V-R:	?
color index R-I:	?
slope parameter G:	(0.15) assumed
geometric albedo:	(~0.3)
mass:	?
density:	?
type:	?

other data, second component:

diameter: 0.05 km [I9053]
diameter ratio Ds/Dp: (0.08)
component magnitude difference: (5.5)
rotation period: ?

other data, third component:

diameter: 0.10 km [I9053]
diameter ratio Ds/Dp: (0.15)
component magnitude difference: (4)
rotation period: ?

--(136617) 1994 CC--discovery and notes:

Primary discovered 3 February 1994 by the Spacewatch program at Kitt Peak Observatory; subsequently linked to observations from 1988. (136617) 1994 CC is an Apollo type asteroid and is the second identified triple system among the near-Earth population.

Second and third components identified from radar observations at Goldstone and Arecibo in June 2009. This corresponded to a close approach by (136617) 1994 CC to the Earth on 10 June 2009 at a distance of 0.016827 AU, or 6.5 times the Earth-Moon distance.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:

Scotti, J., Jedicke, R., & Marsden, B. G. 1996, Minor Planet Electronic Circulars 1994 CC
Gehrels, T., Scotti, J. V., & Marsden, B. G. 1994, Minor Planet Electronic Circulars 1994 CC
Scotti, J. V., Gehrels, T., & Marsden, B. G. 1994, Minor Planet Electronic Circulars 1994 CC

© 2009 by Wm. Robert Johnston.
Last modified 8 July 2009.
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