Asteroids with Satellites Database--Johnston's Archive

(1717) Arlon

compiled by Wm. Robert Johnston
last updated 21 September 2014

--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: 2.195947594 AU
orbital period P: 3.254176913 yr
(= 1188.5881170 d)
eccentricity e: 0.128976235
perihelion distance q: 1.912722542 AU
aphelion distance Q: 2.479172646 AU
inclination i: 6.1890744°
argument of perihelion ω: 115.964397°
ascending node Ω: 340.498405°
mean anomaly M: 220.529448°
perihelion passage TP: 2015 Aug 26.48067
Epoch: 2014 May 23
data arc: 1930-2013 (1402 obs.)
Earth MOID: 0.938387 AU
Jupiter Tisserand invariant TJ: 3.65


orbital data, secondary:
binary dynamical type:A [M09a]
semimajor axis as: 17 km [*E]
separation/primary radius as/rp:3.7 [*E]
separation/Hill radius as/rH:0.013 [*E]
orbital period Ps: 0.7598 d [C06a]
eccentricity es: ?
normalized ang. mom. αL: 2.02 [M09a]

other data, system (combined):
absolute mag. H: 12.2 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 9.13 ± 0.17 km [M11b]
geometric albedo: 0.249 ± 0.042 [M11b]
color index U-B: ?
color index B-V: ?
taxonomic type: S (Tholen) [JPL]
mass m: ?
density ρ: (1.6 g/cm3) [*A]
Hill radius rH: 1400 km [*E]

other data, primary:
diameter dp: 9.13 ± 0.17 km [M11b]
rotation period RPp: 5.148 h [C06a]
amplitude in mag., rotational ΔM: 0.08 [C06a]
amplitude in mag., mutual events ΔM:0.13 [C06a]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: ?
diameter ratio ds/dp: ?
component mag. difference ΔM: ?
rotation period RPs: ?

-- (1717) Arlon --discovery and notes:

Primary discovered 1954 Jan 08 from Uccle, Belgium by S. J. Arend. Alternate designation(s): 1954 AC, 1930 YU, 1941 BJ, 1946 UB, 1951 GQ, 1954 CE, 1977 FQ3, 1978 PC5, A915 CC. Linked to prediscovery observations from 1930 Dec 20. Permanent number assigned -.

Named 1983 Sep 22 for the town of Arlon, Luxembourg province, Belgium [MPC8150].

Companion discovered 2005 Dec 04 by W. Cooney, J. Gross, D. Terrell, R. Stephens, P. Pravec, P. Kusnirak, R. Durkee, and A. Galad using lightcurve observations from Sonoita Research Observatory, Sonoita, Arizona, USA; Yucca Valley, California, USA; Ondrejov Observatory, Czech Republic; Minneapolis, MN; Modra Observatory, Slovakia. Announced 2006 Jan 17 [C06a].

--Links, more technical:

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--Links to ADS abstracts:


© 2006-2008, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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