1680 Per Brahe
| Discovery [1] | |
|---|---|
| Discovered by | L. Oterma |
| Discovery site | Turku Observatory |
| Discovery date | 12 February 1942 |
| Designations | |
| MPC designation | 1680 Per Brahe |
|
Named after
|
Per Brahe the Younger (Count and Governor)[2] |
| 1942 CH · 1934 PP 1937 AA · 1937 AY 1938 JA · 1943 PC 1949 XL · 1952 OG 1953 VD1 · 1960 FF A902 JA |
|
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.45 yr (41,439 days) |
| Aphelion | 3.2203 AU |
| Perihelion | 2.2307 AU |
| 2.7255 AU | |
| Eccentricity | 0.1815 |
| 4.50 yr (1,644 days) | |
| 42.969° | |
| Inclination | 4.2605° |
| 83.357° | |
| 158.59° | |
| Physical characteristics | |
| Dimensions | 14.20 km[4] 18.29±0.70 km[5] 14.848±0.130 km[6] 15.45±1.32 km[7] 14.36 km (derived)[3] |
| 3.428 h[3] 3.444±0.007 h[8] 3.44 h[8] 3.426±0.002 h[9] |
|
| 0.2903[4] 0.178±0.015[5] 0.2722±0.0223[6] 0.407±0.294[7] 0.3409 (derived)[3] |
|
| SMASS = S S [3] |
|
| 11.0 | |
1680 Per Brahe, provisional designation 1942 CH, is a bright, stony asteroid from the outer region of the asteroid belt, about 15 kilometers in diameter. It was discovered by Finnish female astronomer Liisi Oterma at Turku Observatory on 12 February 1942.[10]
The asteroid orbits the Sun at a distance of 2.2–3.2 AU once every four and a half years (1,644 days). Its orbit shows an eccentricity of 0.18 and is tilted by 4 degrees to the plane of the ecliptic. Light-curve photometry carried out in 2006 and 2012, rendered a rotation period of 3.4 hours.[8][9] The geometric albedo of the S-type asteroid varies between 0.18 and 0.40, based on the different results from the IRAS, Akari, WISE and NEOWISE surveys.[4][5][6][7]
The minor planet was named after Swedish count Per Brahe (1602–1680), who was Governor General of Finland in the 17th century. His prosperous legacy saw the establishment of Academia Aboensis, the first university in Finland, the construction of various new towns and many schools, and the publication of the first Finnish Bible.[2]
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 3.4 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 8.2 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.
- ↑ 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
- 1680 Per Brahe at the JPL Small-Body Database
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