12 Victoria
 | |
| Discovery | |
|---|---|
| Discovered by | John Russell Hind |
| Discovery date | 13 September 1850 |
| Designations | |
| (12) Victoria | |
| Pronunciation | /vɪkˈtɔːriə/[1] |
Named after | Victoria (Latin: Uictōria) |
| Main belt | |
| Adjectives | Victorian |
| Symbol | .svg){kind=small} (historical) |
| Orbital characteristics[2] | |
| Epoch 17.0 October 2024 (JD 2460600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 173.98 yr |
| Aphelion | 2.85 AU (426 million km) |
| Perihelion | 1.82 AU (272 million km) |
| 2.33 AU (349 million km) | |
| Eccentricity | 0.22013 |
| 3.57 yr (1302.6 d) | |
Average orbital speed | 19.50 km/s |
| 326.4° | |
| 0° 16m 34.914s / day | |
| Inclination | 8.374° |
| 235.36° | |
| 15 February 2025 | |
| 69.55° | |
| Earth MOID | 0.83 AU (124 million km) |
| Jupiter MOID | 2.42 AU (362 million km) |
| TJupiter | 3.522 |
| Physical characteristics | |
| Dimensions | 140 km × 116 km × 96 km (± 4 km × 3 km × 3 km)[3] |
| 116±2 km[3] 115.087 ± 1.199 km[2] 124.09 ± 8.31 km[4] | |
| Flattening | 0.31[a] |
| Mass | (2.7±1.3)×1018 kg[3] (2.45±0.46)×1018 kg[4] |
Mean density | 3.4±1.7 g/cm3[3] 2.45±0.67 g/cm3[4] |
Equatorial surface gravity | 0.0315 m/s² |
Equatorial escape velocity | 0.0596 km/s |
| 8.6599 h (0.36083 d)[2] 8.660345±0.000005 h[3] | |
| 110°[3] | |
Pole ecliptic longitude | 177°±2°[3] |
Pole ecliptic latitude | −27°±3°[3] |
| 0.167 (calculated)[3] 0.163 ± 0.027[2] | |
| Temperature | ~178 K |
| S (Tholen)/L (SMASS)[2] A[3] L[4] | |
| 8.68[5] to 12.82 | |
| 7.30[2] 7.24[3] | |
| 0.188" to 0.04" | |
12 Victoria is a large main-belt asteroid, orbiting the Sun with a period of 3.56 years and an eccentricity of 0.221. It is a stony (S-type) asteroid, about 112–124 km across with an albedo of 0.18 and a rotation period of 8.66 hours. Victoria has been observed to occult a star three times since its discovery. Radar and speckle interferometry observations show that the shape of Victoria is elongated, and it is suspected to be a binary asteroid, with a moon of irregular shape.[6]
This minor planet was discovered by English astronomer J. R. Hind on September 13, 1850. Victoria is officially named after the Roman goddess of victory, but the name also honours Queen Victoria. The goddess Victoria (Nike for the Greeks) was the daughter of Styx by the Titan Pallas. The coincidence with the name of the then-reigning queen caused quite a controversy at the time, and B. A. Gould, editor of the prestigious Astronomical Journal, adopted the alternate name Clio (now used by 84 Klio), proposed by the discoverer. However, W. C. Bond, of the Harvard College Observatory, then the highest authority on astronomy in America, held that the mythological condition was fulfilled and the name therefore acceptable, and his opinion eventually prevailed.[7]
The historical symbol for Victoria was a star with a branch of laurel. It is encoded in Unicode 17.0 as U+1CEC5 (.svg){kind=small}
).[8][9]
| Date and time of closest approach |
Earth distance (AU) |
Sun distance (AU) |
Velocity relative to Earth (km/s) |
Velocity relative to Sun (km/s) |
Uncertainty region (3-sigma) |
Solar elongation |
|---|---|---|---|---|---|---|
| 26 June 2028 ≈01:57 | 0.877 AU (131.2 million km; 81.5 million mi; 341 LD) | 1.88 AU (281 million km; 175 million mi) | 6.4 | 23.7 | ± 7 km | 166.9° |
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See also
[edit | edit source]Notes
[edit | edit source]References
[edit | edit source]- ^ Noah Webster (1884) A Practical Dictionary of the English Language
- ^ a b c d e f Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ a b c d e f g h i j k l P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
- ^ a b c d Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). See Table 1.
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Other reports of asteroid/TNO companions
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
- ^ Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value).
External links
[edit | edit source]- Lua error in Module:Citation/CS1/Configuration at line 2172: attempt to index field '?' (a nil value). (displays Elong from Sun and V mag for 2011)
- 12 Victoria at AstDyS-2, Asteroids—Dynamic Site
- 12 Victoria at the JPL Small-Body DatabaseLua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
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