82 Alkmene
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Discovery
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| Discovered by | Karl Theodor Robert Luther |
| Discovery date | November 27, 1864 |
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Designations
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| Minor planet category |
Main belt |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 505.547 Gm (3.379 AU) |
| Perihelion | 320.232 Gm (2.141 AU) |
| Semi-major axis | 412.890 Gm (2.760 AU) |
| Eccentricity | 0.224 |
| Orbital period | 1674.795 d (4.59 a) |
| Average orbital speed | 17.70 km/s |
| Mean anomaly | 291.491° |
| Inclination | 2.833° |
| Longitude of ascending node | 25.636° |
| Argument of perihelion | 110.371° |
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Physical characteristics
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| Dimensions | 61.0 km |
| Mass | 2.4×1017 kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | 0.0170 m/s² |
| Escape velocity | 0.0322 km/s |
| Rotation period | ? d |
| Albedo | 0.208 [1] |
| Temperature | ~168 K |
| Spectral type | S |
| Absolute magnitude | 8.40 |
82 Alkmene (alk-mee'-nee, IPA: /ælkˈmiːni/) is a Main belt asteroid. Alkmene was discovered by R. Luther on November 27, 1864 and named after Alcmene, the mother of Herakles in Greek mythology. A satellite has been suggested based on the lightcurve data. [1]
[edit] References
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