Asteroids with Satellites Database--Johnston's Archive

(29314) Eurydamas

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: Jupiter trojan, L5


orbital data, primary (osculating elements) [JPL] :
semimajor axis a: 5.27991384 AU
orbital period P: 12.13244847 yr
(= 4431.37680 d)
eccentricity e: 0.072609396
perihelion distance q: 4.89654248 AU
aphelion distance Q: 5.66328519 AU
inclination i: 15.2344394°
argument of perihelion ω: 135.484993°
ascending node Ω: 143.376173°
mean anomaly M: 144.799155°
perihelion passage TP: 2009 Jul 05.6121
Epoch: 2014 May 23
data arc: 1989-2013 (446 obs.)
Earth MOID: 3.8985 AU
Jupiter Tisserand invariant TJ: 2.924


orbital data, secondary:
semimajor axis as: 41 km [*E]
separation/primary radius as/rp:2.6 [*E]
separation/Hill radius as/rH:0.0042 [*D]
orbital period Ps: 0.6265 ± 0.0003 d [M07a]
eccentricity es: ?
normalized ang. mom. αL: ?

other data, system (combined):
absolute mag. H: 11.5 [MPC]
slope parameter G: (0.15) [*A]
effective diameter dE: 40 km [*D]
geometric albedo: 0.04 [M07a]
color index U-B: ?
color index B-V: ?
taxonomic type: ?
mass m: 1.44x1016 kg [*D]
density ρ: 0.59 ± 0.06 g/cm3[M07a]
Hill radius rH: 9800 km [*D]

other data, primary:
diameter dp: 32 km [M07a]
rotation period RPp: 15.035 ± 0.007 h [M07a]
amplitude in mag., rotational ΔM: 1.05 ± 0.03 [M07a]
pole direction Β, λ: ? , ?


other data, secondary:
diameter ds: 24 km [M07a]
diameter ratio ds/dp: 0.737 ± 0.148 [M07a]
component mag. difference ΔM: 0.7 [* D]
rotation period RPs: ?

-- (29314) Eurydamas --discovery and notes:

Primary discovered 1994 Feb 08 from European Southern Observatory, La Silla, Chile by E. W. Elst. Alternate designation(s): 1994 CR18, 2000 TR49. Linked to prediscovery observations from 1989 Dec 21. Permanent number assigned 2001 Oct 02.

Named 2012 Apr 06 for the Trojan priest Eurydamas [MPC79103].

Companion discovered 2005 Apr 14 using lightcurve observations. Announced 2007 Jun 01.

--Links, more technical:

--Links, less technical:

--Links to ADS abstracts:


© 2009-2012, 2014 by Wm. Robert Johnston.
Last modified 21 September 2014.
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