108 Hecuba
Discovery | |||||||||||||
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Discovered by | R. Luther | ||||||||||||
Discovery date | April 2, 1869 | ||||||||||||
Designations | |||||||||||||
Named after
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Hecuba | ||||||||||||
Main belt | |||||||||||||
Orbital characteristics[1] | |||||||||||||
Epoch November 26, 2005 (JD 2453700.5) | |||||||||||||
Aphelion | 510.261 Gm (3.411 AU) | ||||||||||||
Perihelion | 459.401 Gm (3.071 AU) | ||||||||||||
484.831 Gm (3.241 AU) | |||||||||||||
Eccentricity | 0.052 | ||||||||||||
2131.062 d (5.83 a) | |||||||||||||
241.477° | |||||||||||||
Inclination | 4.247° | ||||||||||||
350.375° | |||||||||||||
191.105° | |||||||||||||
Physical characteristics | |||||||||||||
Dimensions | 65 km[1] | ||||||||||||
Mass | ~3.9×1017 kg (estimate) | ||||||||||||
Mean density
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~2.7 g/cm³ (estimate)[2] | ||||||||||||
~0.040 km/s (estimate) | |||||||||||||
0.60 d or 1.20 d[3] | |||||||||||||
Albedo | 0.243 | ||||||||||||
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Spectral type
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S[4] | ||||||||||||
108 Hecuba is a fairly large and bright main-belt asteroid. It was discovered by Karl Theodor Robert Luther on April 2, 1869,[5] and named after Hecuba, wife of King Priam in the legends of the Trojan War in Greek Mythology. It became the first asteroid discovered to orbit near a 2:1 mean-motion resonance with the planet Jupiter,[6] and is the namesake of the Hecuba group of asteroids.[7]
In the Tholen classification system, it is categorized as a stony S-type asteroid, while the Bus asteroid taxonomy system lists it as an Sw asteroid.[8] Observations performed at the Palmer Divide Observatory in Colorado Springs, Colorado in during 2007 produced a light curve with a period of 17.859 ± 0.005 hours with a brightness range of 0.11 ± 0.02 in magnitude.[9]
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.
References
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- ↑ Lua error in package.lua at line 80: module 'strict' not found. See appendix A.
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