Satellite (S/2003 (130) 1)
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In 2003, a small moon of Elektra was detected using the Keck II telescope. The diameter of the satellite is 4 km and it orbits at a distance of about 1170 km. The satellite has been given the provisional designation S/2003 (130) 1. Due to only a few observations to date, its orbit is still relatively loosely constrained. |
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| Discovery and designation | |||||||||||||
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| Discovered by | Christian Heinrich Friedrich Peters | ||||||||||||
| Discovery date | February 17, 1873 | ||||||||||||
| Designations | |||||||||||||
| Named after | Electra | ||||||||||||
| Alternative names | |||||||||||||
| Minor planet category | Main belt | ||||||||||||
| Orbital characteristics | |||||||||||||
| Epoch December 31, 2006 (JD 2454100.5) | |||||||||||||
| Aphelion | 565.778 Gm (3.782 AU) | ||||||||||||
| Perihelion | 369.263 Gm (2.468 AU) | ||||||||||||
| Semi-major axis | 467.521 Gm (3.125 AU) | ||||||||||||
| Eccentricity | 0.210 | ||||||||||||
| Orbital period | 2017.954 d (5.52 a) | ||||||||||||
| Average orbital speed | 16.66 km/s | ||||||||||||
| Mean anomaly | 225.604° | ||||||||||||
| Inclination | 22.838° | ||||||||||||
| Longitude of ascending node | 145.635° | ||||||||||||
| Argument of perihelion | 234.753° | ||||||||||||
| Satellites | S/2003 (130) 1 | ||||||||||||
| Physical characteristics | |||||||||||||
| Dimensions | 215×155 ± 12 km | ||||||||||||
| Mass | 6.6±0.4×1018 kg 1.28±0.10×1019 kg |
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| Mean density | 1.3 ± 0.3 g/cm3 3.8 ± 0.3 g/cm3 |
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| Equatorial surface gravity | 0.07 m/s2 | ||||||||||||
| Equatorial escape velocity | 0.13 km/s | ||||||||||||
| Sidereal rotation period | 0.230103 d (5.52247 h) | ||||||||||||
| Axial tilt | 157° | ||||||||||||
| Pole ecliptic latitude | -88° | ||||||||||||
| Pole ecliptic longitude | 68° | ||||||||||||
| Geometric albedo | 0.076 ± 0.011 | ||||||||||||
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| Spectral type | G | ||||||||||||
| Absolute magnitude (H) | 7.12 | ||||||||||||
Read more about this topic: 130 Elektra
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