1631 Kopff
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 11 October 1936 |
| Designations | |
| MPC designation | 1631 Kopff |
|
Named after
|
August Kopff (astronomer)[2] |
| 1936 UC · 1926 TH 1935 FG · 1946 SA 1952 HV2 |
|
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 88.75 yr (32,416 days) |
| Aphelion | 2.7126 AU |
| Perihelion | 1.7581 AU |
| 2.2353 AU | |
| Eccentricity | 0.2135 |
| 3.34 yr (1,221 days) | |
| 231.20° | |
| Inclination | 7.4938° |
| 16.829° | |
| 315.11° | |
| Physical characteristics | |
| Dimensions | 9.66 km[4] 9.58±0.21 km[5] 8.64±0.39 km[6] 9.71 km (derived)[3] |
| 6.683 h[7] | |
| 0.2497[4] 0.259±0.012[5] 0.342±0.061[6] 0.2710 (derived)[3] |
|
| S [3] | |
| 12.1 | |
1631 Kopff, provisional designation 1936 UC, is a stony asteroid from the inner regions of the asteroid belt, about 9 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory on 11 October 1936 (also see discovery circumstances below).[8][lower-alpha 1]
The asteroid is a member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,221 days). Its orbit shows an eccentricity of 0.21 and is tilted by 7 degrees to the plane of the ecliptic. It has a rotation period of 6.7 hours[7] and an albedo of 0.250, according to the surveys carried out by IRAS, Akari, and WISE/NEOWISE.[4][5][6]
The minor planet was named after German astronomer August Kopff (1882–1960). He was first an assistant to Max Wolf prolific discoverer of minor planets himself. In 1924 he became Director of the Astronomisches Rechen-Institut in Berlin, and after the western section moved to Heidelberg he also became director of Heidelberg-Königstuhl Observatory. He was responsible for constructing the third Catalogue of Fundamental Stars (FK3) and initiated work on the fourth (FK4). The lunar carter Kopff is also named in his honour.[2]
Notes
- ↑ Quoted from Dictionary of Minor Planet Names – (1631) Kopff: Karl Reinmuth discovered the planet as 1926 TH on 1926 October 5. The planet could only have been observed on two nights which was not sufficient to derive a reliable orbit. The discovery is therefore credited to Y. Väisälä. Elliptical elements were derived by H. Walter (MPC 1897) from five positions of 1936 UC. The identity between both apparitions was found by A. Patry (MPC 1451).
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 6.2 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.
- ↑ 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
- 1631 Kopff at the JPL Small-Body Database
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