108 Hecuba

108 Hecuba

Discovery
Discovered by	R. Luther
Discovery date	April 2, 1869
Designations
Named after	Hecuba
Minor planet category	Main belt
Orbital characteristics
Epoch November 26, 2005 (JD 2453700.5)
Aphelion	510.261 Gm (3.411 AU)
Perihelion	459.401 Gm (3.071 AU)
Semi-major axis	484.831 Gm (3.241 AU)
Eccentricity	0.052
Orbital period	2131.062 d (5.83 a)
Mean anomaly	241.477°
Inclination	4.247°
Longitude of ascending node	350.375°
Argument of perihelion	191.105°
Proper orbital elements
Physical characteristics
Dimensions	65 km[1]
Mass	~3.9×1017 kg (estimate)
Mean density	~2.7 g/cm³ (estimate)[3]
Escape velocity	~0.040 km/s (estimate)
Rotation period	0.60 d or 1.20 d [2]
Albedo	0.243 [1]
Surface temp.    Kelvin    Celsius	min mean max ~148 215 -58

108 Hecuba is a fairly large and bright main-belt asteroid.

Hecuba orbits within the Hygiea family of asteroids but is not otherwise related to other family members because it has a silicate composition; Hygieas are dark C-type asteroids.

Hecuba was discovered by R. Luther on April 2, 1869, and named after Hecuba, wife of King Priam in the legends of the Trojan War.

References

1. Supplemental IRAS Minor Planet Survey
2. PDS lightcurve data
3. G. A. Krasinsky et al. Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002).