1191 Alfaterna
| Discovery [1] | |
|---|---|
| Discovered by | L. Volta |
| Discovery site | Observatory of Turin (Pino Torinese) |
| Discovery date | 11 February 1931 |
| Designations | |
| MPC designation | 1191 Alfaterna |
|
Named after
|
Nuceria Alfaterna[2] |
| 1931 CA · 1965 AA | |
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.33 yr (30,801 days) |
| Aphelion | 3.0282 AU |
| Perihelion | 2.7547 AU |
| 2.8914 AU | |
| Eccentricity | 0.0472 |
| 4.92 yr (1,796 days) | |
| 18.247° | |
| Inclination | 18.494° |
| 134.72° | |
| 52.834° | |
| Physical characteristics | |
| Dimensions | 42.09±3 km (IRAS: 17)[4] 46.11±0.63 km[5] 46.375±0.836 km[6] 42.01 km (derived)[3] |
| 3.664 h[3] 33.12±1.92 (provisional)[7] |
|
| 0.0574±0.009 (IRAS: 17)[4] 0.050±0.002[5] 0.0297±0.0053[6] 0.0479 (derived)[3] |
|
| C [3] | |
| 10.8[1] | |
1191 Alfaterna, provisional designation 1931 CA, is a carbonaceous asteroid from the outer region of the asteroid belt, about 42 kilometers in diameter. It was discovered by Italian astronomer Luigi Volta at Pino Torinese Observatory, Northern Italy, on 11 February 1931.[8]
The C-type asteroid orbits the Sun at a distance of 2.8–3.0 AU once every 4 years and 11 months (1,796 days). Its orbit is tilted by 18 degrees to the plane of the ecliptic and shows an eccentricity of 0.05. It has a rotation period of 3.66 hours[3] with an alternative, provisional rotation of 33 hours[7] and an albedo between 0.03 and 0.06, according to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of the Wide-field Infrared Survey Explorer.[4][5][6]
It is named for the ancient Roman town of Nuceria Alfaterna, now known as Nocera Inferiore. The ancient city was founded between Pompeii and Salerno by the Oschi around 1000 B.C. and is entombed beneath the present Nocera Superiore, birthplace of A. Fresa, who proposed the name in 1957.[2]
References
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- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
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External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1191 Alfaterna at the JPL Small-Body Database
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