418 Alemannia
| Discovery [1] | |
|---|---|
| Discovered by | M. Wolf |
| Discovery site | Heidelberg Obs. |
| Discovery date | 7 September 1896 |
| Designations | |
| MPC designation | 418 Alemannia |
|
Named after
|
Alemannia (student fraternity)[2] |
| 1896 CV | |
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 109.48 yr (39,986 days) |
| Aphelion | 2.9014 AU |
| Perihelion | 2.2875 AU |
| 2.5944 AU | |
| Eccentricity | 0.1183 |
| 4.18 yr (1,526 days) | |
| 138.24° | |
| Inclination | 6.8136° |
| 248.90° | |
| 126.61° | |
| Physical characteristics | |
| Dimensions | 34.10±4.6 km (IRAS: 17)[4] 40.12±0.62 km[5] 45.448±0.509 km[6] 32.98±1.04 km[7] |
| 4.671 h[3] 5.82 h[8] 4.680±0.024 h[9] 4.6714±0.0001 h[10] 4.67±0.05 h[10] 4.6727±0.0003 h[10] |
|
| 0.1878±0.062 (IRAS: 17)[4] 0.137±0.005[5] 0.1057±0.0158[6] 0.201±0.027[7] |
|
| B–V = 0.703 U–B = 0.225 Tholen = M [1] M [3] |
|
| 9.77[1] | |
418 Alemannia, provisional designation 1896 CV, is a metallic asteroid from the inner regions of the asteroid belt, about 34 kilometers in diameter. It was discovered by German astronomer Max Wolf at Heidelberg Observatory in southern Germany, on 7 September 1896.[11]
The M-type asteroid orbits the Sun at a distance of 2.3–2.9 AU once every 4 years and 2 months (1,526 days). Its orbit is tilted by 7 degrees to the plane of the ecliptic and shows an eccentricity of 0.12. Several photometric light-curve observations rendered a rotation period of 4.67 hours,[10] superseding previous observations that gave a period of 5.82 and 4.68 hours, respectively.[8][9]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the body's albedo lies between 0.11 and 0.20, a typical value for moderately bright, metallic M-type asteroids.[4][5][6][7]
The minor planet was named after the student fraternity Alemannia in Heidelberg, Germany. It was named by German astronomer Adolf Berberich (1861–1920), after whom the asteroid 776 Berbericia is named.[2]
References
- ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 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.
- ↑ 5.0 5.1 5.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 6.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 7.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 8.0 8.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 9.0 9.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 10.0 10.1 10.2 10.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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
- 418 Alemannia at the JPL Small-Body Database
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