Vanadis (minor planet designation: 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.
Discovery | |
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Discovered by | A. Borrelly |
Discovery date | 27 August 1884 |
Designations | |
MPC designation | (240) Vanadis |
Pronunciation | /ˈvɑːnə.dɪs/ |
Alternative designations | A884 QB |
Minor planet category | Main belt |
Orbital characteristics[1] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 131.61 yr (48072 d) |
Aphelion | 3.2134 AU (480.72 Gm) |
Perihelion | 2.1178 AU (316.82 Gm) |
Semi-major axis | 2.6656 AU (398.77 Gm) |
Eccentricity | 0.20551 |
Orbital period (sidereal) | 4.35 yr (1589.6 d) |
Average orbital speed | 18.25 km/s |
Mean anomaly | 60.5202° |
Mean motion | 0° 13m 35.292s / day |
Inclination | 2.1043° |
Longitude of ascending node | 115.191° |
Argument of perihelion | 300.174° |
Physical characteristics | |
Dimensions | 103.90±2.5 km[1] 94.03 ± 5.37 km[2] |
Mass | (1.10 ± 0.92) × 1018 kg[2] |
Mean density | 2.53 ± 2.15 g/cm3[2] |
Synodic rotation period | 10.64 h (0.443 d) |
Geometric albedo | 0.0411±0.002 |
Spectral type | C |
Absolute magnitude (H) | 9.00 |
It was discovered by A. Borrelly on August 27, 1884, in Marseilles and was named after Freyja (Vanadis), the Norse fertility goddess.
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