108 Hecuba
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Discovery
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| Discovered by | R. Luther | |||||||||
| Discovery date | April 2, 1869 | |||||||||
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Designations
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| Named after | Hecuba | |||||||||
| Minor planet category |
Main belt | |||||||||
| 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° | |||||||||
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Physical characteristics
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| 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 |
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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 in Greek Mythology.
[edit] References
- PDS lightcurve data
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G. A. Krasinsky et al. Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002).
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