240 Vanadis
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| Discovery | |
|---|---|
| Discovered by | A. Borrelly |
| Discovery date | August 27, 1884 |
| Designations | |
| Minor planet category | Main belt |
| Orbital characteristics | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 3.214 AU (480.857 Gm) |
| Perihelion | 2.114 AU (316.219 Gm) |
| Semi-major axis | 2.664 AU (398.538 Gm) |
| Eccentricity | 0.207 |
| Orbital period | 4.35 a (1588.204 d) |
| Average orbital speed | 18.25 km/s |
| Mean anomaly | 188.424° |
| Inclination | 2.105° |
| Longitude of ascending node | 115.225° |
| Argument of perihelion | 300.575° |
| Physical characteristics | |
| Dimensions | 94.03 ± 5.37[1] km |
| Mass | (1.10 ± 0.92) × 1018[1] kg |
| Mean density | 2.53 ± 2.15[1] g/cm3 |
| Rotation period | 10.64 h |
| Albedo | 0.041 |
| Spectral type | C |
| Absolute magnitude (H) | 9.0 |
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240 Vanadis is a fairly large main-belt asteroid. It is very dark and is classified as a C-type asteroid, probably composed of primitive carbonaceous material.
It was discovered by A. Borrelly on August 27, 1884, in Marseilles and was named after Freyja (Vanadis), the Norse fertility goddess.
References
- ↑ 1.0 1.1 1.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: 98-118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
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