Asteroids with Satellites Database--Johnston's Archive

(136617) 1994 CC, "Beta", and "Gamma"

compiled by Wm. Robert Johnston
last updated 10 May 2014
under construction--testing upgrades!

--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: 1.637780212 AU
orbital period P: 2.096001706 yr (= 765.5646230 d)
eccentricity e: 0.417226647
perihelion distance q: 0.954454666 AU
aphelion distance Q: 2.321105759 AU
inclination i: 4.6842339°
argument of perihelion ω: 24.7567739°
ascending node Ω: 268.603487°
mean anomaly M: 116.8774809°
perihelion passage TP: 2013 Sep 16.45204
Epoch: 2014 May 23
data arc: 1988-2014 (602 obs.)
Earth MOID: 0.0163517 AU
Jupiter Tisserand invariant TJ: 4.193


orbital data, "Beta":
binary dynamical type:A [*VO]
semimajor axis as: 1.729 ± 0.008 km [F11a]
separation/primary radius as/rp:5.58 [*D]
separation/Hill radius as/rH:0.034 [*D]
orbital period Ps: 1.243 ± 0.0329 d [F11a]
eccentricity es: 0.002 ± 0.015 [F11a]
inclination is:83.376°± 11.158 [F11a]
ascending node Ωs:59.209°± 3.91 [F11a]
argument of pericenter ωs:130.980°± 43.647 [F11a]
mean anomaly M:233.699°± 43.941 [F11a]
Epoch:2009 Jun 12.0
normalized ang. mom. αL: 1.03 [*VO]


orbital data, "Gamma":
binary dynamical type:A [*VO]
semimajor axis as: 6.130 ± 0.108 km [F11a]
separation/primary radius as/rp:19.8 [*D]
separation/Hill radius as/rH:0.121 [*D]
orbital period Ps: 8.376 ± 0.404 d [F11a]
eccentricity es: 0.192 ± 0.014 [F11a]
inclination is:71.709°± 8.994 [F11a]
ascending node Ωs:96.229°± 5.017 [F11a]
argument of pericenter ωs:96.229°± 5.017 [F11a]
mean anomaly M:6.070°± 6.187 [F11a]
Epoch:2009 Jun 12.0
normalized ang. mom. αL: 1.03 [*VO]

other data, system (combined):
absolute mag. H: 17.7 [MPC]
17.671 ± 0.475 [JPL]
slope parameter G: 0.15 [*A]
effective diameter dE: 0.64 ± 0.06 km [*D]
geometric albedo: 0.42 ± 0.1 [B11a]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 2.66x1011 ± 3.29x1010 kg [F11a]
density ρ: 2.1 ± 0.6 g/cm3 [B11a]
Hill radius rH: 51 km [*D]

other data, primary:
diameter dp: 0.62 ± 0.06 km [B11a]
dimensions :0.69x0.67x0.64km [B11a]
geometric albedo :0.42± 0.1[B11a]
rotation period RPp: 2.38860 ± 0.00009 h [B11a]
amplitude in mag., rotational ΔM: 0.09 [*I9053]
pole direction : -30.791±3.91° ; 6.621±11.158° ; [?]


other data, "Beta":
diameter ds: 0.113 ± 0.03 km [B11a]
diameter ratio ds/dp: 0.182 ± 0.052 [*D]
component mag. difference ΔM: 3.7 [*D]
rotation period RPs: ?


other data, "Gamma":
diameter ds: 0.08 ± 0.03 km [B11a]
diameter ratio ds/dp: 0.129 ± 0.05 [*D]
component mag. difference ΔM: 4.4 [*D]
rotation period RPs: ?

-- (136617) 1994 CC, "Beta", and "Gamma" --discovery and notes:

Primary discovered 1994 Feb 03 from Kitt Peak Observatory, Arizona, USA by Spacewatch. . Linked to prediscovery observations from 1988 Sep 14. Permanent number assigned 2006 Dec 05.

"Beta" discovered 2009 Jun 12 by M. Brozovic, L. A. M. Benner, M. C. Nolan, E. S. Howell, C. Magri, J. D. Giorgini, P. A. Taylor, J. L. Margot, M. W. Busch, M. K. Shepard, L. M. Carter, J. S. Jao, J. Van Brimmer, C. R. Franck, M. A. Silva, M. A. Kodis, D. T. Kelley, M. A. Slade, A. Bramson, K. J. Lawrence, J. T. Pollock, P. Pravec, D. E. Reichart, K. M. Ivarsen, J. Haislip, M. C. Nysewander, and A. P. LaCluyze using RAD observations from Goldstone, California, USA; Arecibo Observatory, Puerto Rico. Announced 2009 Jun 19 [I9053].

"Gamma" discovered 2009 Jun 12 by M. Brozovic, L. A. M. Benner, M. C. Nolan, E. S. Howell, C. Magri, J. D. Giorgini, P. A. Taylor, J. L. Margot, M. W. Busch, M. K. Shepard, L. M. Carter, J. S. Jao, J. Van Brimmer, C. R. Franck, M. A. Silva, M. A. Kodis, D. T. Kelley, M. A. Slade, A. Bramson, K. J. Lawrence, J. T. Pollock, P. Pravec, D. E. Reichart, K. M. Ivarsen, J. Haislip, M. C. Nysewander, and A. P. LaCluyze using RAD observations from Goldstone, California, USA; Arecibo Observatory, Puerto Rico. Announced 2009 Jun 19 [I9053].

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© 2009-2012, 2014 by Wm. Robert Johnston.
Last modified 10 May 2014.
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