Asteroids with Satellites Database--Johnston's Archive

(6369) 1983 UC

compiled by Wm. Robert Johnston
last updated 28 November 2015

--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: main belt asteroid


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 2.293215745 AU
orbital period P: 3.472700842 yr
(= 1268.427938 d)
eccentricity e: 0.142830617
perihelion distance q: 1.96567432 AU
aphelion distance Q: 2.620757165 AU
inclination i: 5.9878451°
argument of perihelion ω: 351.449376°
ascending node Ω: 35.559477°
mean anomaly M: 347.703373°
perihelion passage TP: 2015 Jan 21.326069
Epoch: 2014 Dec 09
data arc: 1954-2015 (982 obs.)
Earth MOID: 0.970288 AU
Jupiter Tisserand invariant TJ: 3.576


orbital data, secondary:
semimajor axis as: (15 km?) [*E]
orbital period Ps: 1.66 d [P15f]
eccentricity es: 0 [P15f]
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 14.2 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 5.17 ± 1.24 km [R15a]
geometric albedo: 0.138 ± 0.033 [R15a]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 760 km [*E]

other data, primary:
diameter dp: 4.9 km [*E]
rotation period RPp: 2.9 ± 0.5 h [P15f]
amplitude in mag., rotational ΔM: ?
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 1.7 km [*E]
diameter ratio ds/dp: 0.35 ± 0.1 [P15f]
component mag. difference ΔM: 2.3 [*D]
rotation period RPs: ?

-- (6369) 1983 UC --discovery and notes:

Primary discovered 1983 Oct 16 from Klet, Czech Republic by Z. Vavrova. Alternate designation(s): 1969 UT1, 1990 TC8. Linked to prediscovery observations from 1954 Apr 08. Permanent number assigned 1995 May 14.

Companion discovered 2013 Apr 08 by Pravec, P., P. Scheirich, P. Kusnirak, K. Hornoch, and A. Galad using lightcurve observations. Announced 2015 Aug 05 [P15f].

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--Links to ADS abstracts:


© 2015 by Wm. Robert Johnston.
Last modified 28 November 2015.
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