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13184 Augeias

Trojan asteroid

Field	Value
minorplanet	yes
name	13184 Augeias
background	#C2FFFF
discovery_ref
discoverer	E. W. Elst
discovery_site	La Silla Obs.
discovered	4 October 1996
mpc_name	(13184) Augeias
alt_names

pronounced
named_after	Αὐγείας
(Greek mythology)
mp_category	Jupiter trojan
Greekbackground
orbit_ref
epoch	23 March 2018 (JD 2458200.5)
uncertainty	0
observation_arc	25.23 yr (9,214 d)
aphelion	5.4174 AU
perihelion	4.9138 AU
semimajor	5.1656 AU
eccentricity	0.0487
period	11.74 yr (4,288 d)
mean_anomaly	340.51°
mean_motion	/ day
inclination	4.5132°
asc_node	227.46°
arg_peri	96.833°
jupiter_moid	0.1456 AU
tisserand	2.9910
mean_diameter
(calculated)
rotation
albedo	(assumed)

spectral_type	C (assumed)
abs_magnitude	10.90
11.0

(Greek mythology) Greekbackground (calculated)

11.0

13184 Augeias is a Jupiter trojan from the Greek camp, approximately 34 km in diameter. It was discovered by Belgian astronomer Eric Elst at ESO's La Silla Observatory in northern Chile on 4 October 1996. The dark Jovian asteroid has a rotation period of 11.9 hours. It was named after Augeas from Greek mythology.

Orbit and classification

Augeias is a dark Jovian asteroid in a 1:1 orbital resonance with Jupiter. It is located in the leading Greek camp at the Gas Giant's Lagrangian point, 60° ahead of its orbit . It is also a non-family asteroid in the Jovian background population. It orbits the Sun at a distance of 4.9–5.4 AU once every 11 years and 9 months (4,288 days; semi-major axis of 5.17 AU). Its orbit has an eccentricity of 0.05 and an inclination of 5° with respect to the ecliptic. The body's observation arc begins with its first observation as ** at La Silla in April 1992, or four and a half years prior to its official discovery observation.

Naming

This minor planet was named from Greek mythology after King Augeas, father of Epicaste. The fifth Labour of Heracles was to clean the king's stables. Heracles solved the difficult and humiliating feat by rerouting two rivers to wash out the enormous amount of dung. The official naming citation was published by the Minor Planet Center on 6 January 2003 (M.P.C. 47300).

Physical characteristics

Augeias is an assumed C-type asteroid, while most larger Jupiter trojans are D-types.

Rotation period

A first rotational lightcurve of Augeias was obtained from by Linda French and Lawrence Wasserman in April 2014. Lightcurve analysis gave a tentative rotation period of hours with a brightness amplitude of 0.15 magnitude (). In August 2015, photometric observations by the Kepler space telescope during its K2 mission determined a refined period of hours with a brightness variation of 0.15 magnitude (). One week later, a second, lower-rated lightcurve by Kepler gave a concurring period of hours with an amplitude of 0.16 ().

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Augeias measures 33.96 kilometers in diameter and its surface has an albedo of 0.067, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 35.12 kilometers based on an absolute magnitude of 11.0.

References

{{OED. Augeus

Info: Wikipedia Source

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