1646 Rosseland
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 19 January 1939 |
| Designations | |
| MPC designation | 1646 Rosseland |
|
Named after
|
Svein Rosseland (astrophysicist)[2] |
| 1939 BG · 1937 QH 1948 QR · 1955 NB 1977 FK · 1980 ME |
|
| main-belt · (inner) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 77.74 yr (28,396 days) |
| Aphelion | 2.6426 AU |
| Perihelion | 2.0798 AU |
| 2.3612 AU | |
| Eccentricity | 0.1191 |
| 3.63 yr (1,325 days) | |
| 103.22° | |
| Inclination | 8.3804° |
| 120.00° | |
| 279.99° | |
| Physical characteristics | |
| Dimensions | 13.49±0.27 km[4] 12.130±0.007 km[5] 12.80±0.23 km[6] 12.85 km (calculated)[3] |
| 69.2 h[7] 68.9 h[8] |
|
| 0.186±0.008[4] 0.2253±0.0341[5] 0.202±0.030[6] 0.20 (assumed)[3] |
|
| S [3] | |
| 11.82 | |
1646 Rosseland, provisional designation 1939 BG, is a stony asteroid from the inner regions of the asteroid belt, about 13 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 19 January 1939.[9]
The S-type asteroid orbits the Sun at a distance of 2.1–2.6 AU once every 3.63 years (1,325 days). Its orbit shows an eccentricity of 0.12 and is tilted by 8 degrees to the plane of the ecliptic. It has a rotation period of 69 hours[7][8] and an albedo of 0.18–0.23, according to the surveys carried out by the Akari and WISE/NEOWISE space-based missions.[4][5]
The minor planet is named in honor of renowned Norwegian Astrophysicist Svein Rosseland (1894–1985), founder and first director of the Institute for Theoretical Astrophysics in Oslo. His work on the theory of stellar interiors included studies of stellar rotation and stability and the derivation of the Rosseland mean opacity.[2] The lunar crater Rosseland is also named after him.
References
- ↑ 1.0 1.1 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 3.3 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 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 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.
- ↑ 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
- 1646 Rosseland at the JPL Small-Body Database
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