(136617) 1994 CC
compiled by Wm. Robert Johnston
last updated 3 November 2012
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, "Beta":
|
semimajor axis a: |
1.729 ± 0.008 km [F11a]
| |
semimajor axis/primary radius a/Rp: |
(5.58)
| |
orbital period P: |
1.243 ± 0.0329 d [F11a]
| |
eccentricity e: |
0.002 ± 0.015 [F11a]
| |
inclination i: |
83.376° ± 11.158° [F11a]
| |
argument of periapsis omega: |
130.980° ± 43.647° [F11a]
| |
ascending node OMEGA: |
59.209° ± 3.910° [F11a]
| |
mean anomaly M: |
233.699° ± 43.941° [F11a]
| |
Epoch: |
MJD 54994.0 [F11a]
|
orbital data, "Gamma":
|
semimajor axis a: |
6.130 ± 0.108 km [F11a]
| |
semimajor axis/primary radius a/Rp: |
(19.8)
| |
orbital period P: |
8.376 ± 0.404 d [F11a]
| |
eccentricity e: |
0.192 ± 0.014 [F11a]
| |
inclination i: |
71.709° ± 8.994° [F11a]
| |
argument of periapsis omega: |
96.229° ± 5.017° [F11a]
| |
ascending node OMEGA: |
48.479° ± 4.741° [F11a]
| |
mean anomaly M: |
6.070° ± 6.187° [F11a]
| |
Epoch: |
MJD 54994.0 [F11a]
| |
other data, primary:
|
equivalent diameter: |
0.62 ± 0.06 km [B11a]
| |
dimensions axbxc: |
0.69 +0.08/-0.04 km x
0.67 +0.04/-0.08 km x
0.64 ± 0.06 km [B11a]
| |
absolute magnitude H: |
17.671 ± 0.475 [JPL]
| |
rotation period: |
2.38860 ± 0.00009 h [B11a]
| |
amplitude delta M: |
0.09 [I9053]
| |
rotation pole: |
RA -30.791° ± 3.910°
DEC 6.624° ± 11.158°
| |
color index B-V: |
?
| |
color index V-R: |
?
| |
color index R-I: |
?
| |
slope parameter G: |
(0.15) assumed
| |
geometric albedo: |
0.42 ± 0.10 [B11a]
| |
mass: |
(25.935 ± 1.315)x1010 kg [F11a]
| |
density: |
2.1 ± 0.6 g/cm3 [B11a]
| |
type: |
?
|
other data, "Beta":
|
diameter: |
0.113 ± 0.030 km [B11a]
| |
diameter ratio Ds/Dp: |
(0.18)
| |
component magnitude difference: |
(3.7)
| |
rotation period: |
?
| |
mass: |
(0.580 ± 0.331)x1010 kg [F11a]
|
other data, "Gamma":
|
diameter: |
0.080 ± 0.030 km [B11a]
| |
diameter ratio Ds/Dp: |
(0.13)
| |
component magnitude difference: |
(4.4)
| |
rotation period: |
?
| |
mass: |
(0.0911 +0.20/-0.09)x1010 kg [F11a]
|
|
--(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.
Brozovic et al. (2011) have completed a shape model of the primary, showing it to have an equatorial ridge.
--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, 2012 by Wm. Robert Johnston.
Last modified 3 November 2012.
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