3181 Ahnert
| Discovery [1] | |
|---|---|
| Discovered by | F. Börngen |
| Discovery site | Karl Schwarzschild Observatory |
| Discovery date | 8 March 1964 |
| Designations | |
| MPC designation | 3181 Ahnert |
|
Named after
|
Paul Ahnert (astronomer)[2] |
| 1964 EC · 1932 RK 1936 XJ · 1951 GC1 1964 DE · 1975 NH1 1975 RD · 1979 SC12 1979 UO4 · 1979 WD8 1979 WU1 · 1982 RE1 |
|
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.67 yr (30,925 days) |
| Aphelion | 2.3739 AU |
| Perihelion | 2.0846 AU |
| 2.2292 AU | |
| Eccentricity | 0.0648 |
| 3.33 yr (1,216 days) | |
| 132.89° | |
| Inclination | 3.9570° |
| 221.14° | |
| 304.64° | |
| Physical characteristics | |
| Dimensions | 8.57±0.24 km[4] 8.511±0.031 km[5] 8.19 km (calculated)[3] |
| 0.264±0.029[4] 0.1856±0.0266[5] 0.24 (assumed)[3] |
|
| SMASS = S S [3] |
|
| 12.6[1] | |
3181 Ahnert, provisional designation 1964 EC, is a stony asteroid from the inner regions of the asteroid belt, about 8 kilometers in diameter. It was discovered by German astronomer Freimut Börngen at the Karl Schwarzschild Observatory in Tautenburg, eastern Germany, on 8 March 1964.[6]
The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 2.1–2.4 AU once every 3 years and 4 months (1,216 days). Its orbit shows an eccentricity of 0.06 and is tilted by 4 degrees to the plane of the ecliptic.
According to the surveys carried out by the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the body's surface has an albedo of 0.19 and 0.26, respectively, while the Collaborative Asteroid Lightcurve Link assumes an intermediate albedo of 0.24, which is identical to the albedo of the Flora family's namesake, 8 Flora.[3][4][5] As of 2016, the asteroid's rotation period still remains unknown.
The minor planet was named in honor of German astronomer Paul Ahnert (1897–1989), author of the annual Kalender für Sternfreunde and well known by professional and amateur astronomers alike in many countries. His principal aim was the popularization of astronomy, and he published several books on the art of making observations. Ahnert's research focused on variable stars and on the physics of the Solar System at the Sonneberg Observatory, after which the minor planet 1039 Sonneberga is named.[2]
References
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- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
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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
- 3181 Ahnert at the JPL Small-Body Database
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