3548 Eurybates

3548 Eurybates
Discovery[1]
Discovered by	Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels
Discovery date	19 September 1973
Designations
Pronunciation	/jʊər[invalid input: 'i-']ˈbeɪtiːz/
Named after	Eurybates
Alternative designations	1973 SO
Minor planet category	Jupiter Trojan
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 0
Observation arc	22457 days (61.48 yr)
Aphelion	5.65123 AU (845.412 Gm)
Perihelion	4.72534 AU (706.901 Gm)
Semi-major axis	5.18828 AU (776.156 Gm)
Eccentricity	0.089229
Orbital period (sidereal)	11.82 yr (4316.52 d)
Average orbital speed	13.08 km/s
Mean anomaly	170.261°
Mean motion	0° 5m 0.242s / day
Inclination	8.06351°
Longitude of ascending node	43.5670°
Argument of perihelion	28.1237°
Earth MOID	3.74152 AU (559.723 Gm)
Jupiter MOID	0.0895387 AU (13.39480 Gm)
TJupiter	2.972
Physical characteristics
Dimensions	72.2 km
Mean radius	36.07 ± 2.05 km
Mass	3.9×1017 kg
Mean density	2.0 g/cm³
Equatorial surface gravity	0.0202 m/s²
Equatorial escape velocity	0.0382 km/s
Synodic rotation period	8.711 h (0.3630 d)
Geometric albedo	0.0538 ± 0.007
Temperature	~122 K
Absolute magnitude (H)	9.7

3548 Eurybates is a Jupiter Trojan asteroid that orbits in the L₄ Lagrangian point of the Sun-Jupiter system, in the "Greek Camp" of Trojan asteroids. It was named after the Greek hero Eurybates, who was a herald for the Greek armies during the Trojan War. It was discovered by Cornelis Johannes van Houten, Ingrid van Houten-Groeneveld and Tom Gehrels on September 19, 1973 in Palomar, California at the Palomar Observatory.

Photometric observations of this asteroid during 1992 were used to build a light curve showing a rotation period of 8.711 ± 0.009 hours with a brightness variation of 0.20 ± 0.01 magnitude.^[3]

References

^ "The Asteroid Orbital Elements Database". astorb. Lowell Observatory.
^ "3548 Eurybates (1973 SO)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 April 2016.
^ Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; Hahn, Gerhard; Schober, Hans-Josef; Lahulla, Felix; Delbò, Marco; Lagerkvist, Claes-Ingvar (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects". The Astronomical Journal. 141 (5): 170. Bibcode:2011AJ....141..170M. doi:10.1088/0004-6256/141/5/170.