12 Victoria
VLT adaptive optics image on 8 November 2018 | |
| Discovery | |
|---|---|
| Discovered by | John Russell Hind |
| Discovery site | George Bishop's Observatory |
| Discovery date | 13 September 1850 |
| Designations | |
| (12) Victoria | |
| Pronunciation | /vɪkˈtɔːriə/ |
Named after | Victoria (Latin: Uictōria) |
| Main belt | |
| Adjectives | Victorian |
| Symbol | (historical) (variant) |
| Orbital characteristics | |
| Epoch 21 November 2025 (JD 2461000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 175.17 yr |
| Aphelion | 2.84712 AU |
| Perihelion | 1.82055 AU |
| 2.33384 AU | |
| Eccentricity | 0.21993 |
| 3.56545 yr (1302.28 d) | |
Average orbital speed | 19.50 km/s |
| 76.9360° | |
| 0° 16m 34.914s / day | |
| Inclination | 8.37403° |
| 235.353° | |
| 15 February 2025 | |
| 69.5463° | |
| Earth MOID | 0.82426 AU |
| Jupiter MOID | 2.4223 AU |
| TJupiter | 3.522 |
| Physical characteristics | |
| Dimensions | 140 km × 116 km × 96 km (± 4 km × 3 km × 3 km) |
| 116±2 km 115.087 ± 1.199 km | |
| Flattening | 0.31 |
| Mass | (2.7±1.3)×1018 kg (2.45±0.46)×1018 kg |
Mean density | 3.4±1.7 g/cm3 2.45±0.67 g/cm3 |
Equatorial surface gravity | 0.0315 m/s² |
Equatorial escape velocity | 0.0596 km/s |
| 8.6599 h (0.36083 d) 8.660345±0.000005 h | |
| 110° | |
Pole ecliptic longitude | 177°±2° |
Pole ecliptic latitude | −27°±3° |
| 0.167 (calculated) 0.163 ± 0.027 | |
| Temperature | ~178 K |
| S (Tholen) L (SMASS) A | |
| 8.68 to 12.82 | |
| 7.30 7.24 | |
| 0.188" to 0.04" | |
12 Victoria is a large asteroid located in the main belt. It was the twelfth known asteroid, discovered on 13 September 1850 by English astronomer John R. Hind from George Bishop's Observatory in London, England. It was named after Victoria, the ancient Roman goddess of victory. The name's coincidence with that of then-reigning Queen Victoria led to an extended controversy, with American astronomers objecting to its use. In place of Victoria, the alternative name Clio was used in American publications until the late 19th century.
Victoria is around 116 kilometres (72 mi) in diameter and irregular in shape. It orbits the Sun at an average distance of 2.33 astronomical units on a 3.57 year long orbit. It is thought to be a stony S-type asteroid, and it rotates once every 8.66 hours.