1646 Rosseland
| Discovery | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Obs. |
| Discovery date | 19 January 1939 |
| Designations | |
| (1646) Rosseland | |
Named after | Svein Rosseland (astrophysicist) |
| 1939 BG · 1937 QH 1948 QR · 1955 NB 1977 FK · 1980 ME | |
| main-belt · (inner) | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 79.69 yr (29,105 days) |
| Aphelion | 2.6435 AU |
| Perihelion | 2.0771 AU |
| 2.3603 AU | |
| Eccentricity | 0.1200 |
| 3.63 yr (1,324 days) | |
| 320.86° | |
| 0° 16m 18.48s / day | |
| Inclination | 8.3787° |
| 119.98° | |
| 279.82° | |
| Physical characteristics | |
| Dimensions | 11.48±3.28 km 11.50±2.88 km 12.130±0.007 km 12.801±0.231 km 12.85 km (calculated) 13.49±0.27 km |
| 68.9 h 69.2 h | |
| 0.18±0.10 0.186±0.008 0.19±0.07 0.20 (assumed) 0.202±0.030 0.2253±0.0341 | |
| S | |
| 11.82 · 11.97±0.11 · 12.06 | |
1646 Rosseland, provisional designation 1939 BG, is a stony asteroid from the inner regions of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 19 January 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It was later named after Norwegian astrophysicist Svein Rosseland.