2826 Ahti
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 18 October 1939 |
| Designations | |
| MPC designation | 2826 Ahti |
|
Named after
|
Ahti (Finnish mythology)[2] |
| 1939 UJ · 1942 FH 1950 TG3 · 1968 UT2 1979 RG · 1980 VK1 |
|
| main-belt (outer) | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 76.17 yr (27,820 days) |
| Aphelion | 3.3724 AU |
| Perihelion | 3.0719 AU |
| 3.2222 AU | |
| Eccentricity | 0.0466 |
| 5.78 yr (2,113 days) | |
| 225.69° | |
| Inclination | 15.464° |
| 33.675° | |
| 151.10° | |
| Physical characteristics | |
| Dimensions | 36.71±2.7 km (IRAS:24)[3] 42.16±0.62 km[4] 42.373±0.121 km[5] 55.33±0.29 km[6] 36.60 km (derived)[7] |
| 24 h[8] | |
| 0.0628±0.010 (IRAS:24)[3] 0.049±0.002[4] 0.0471±0.0122[5] 0.023±0.004[6] 0.0479 (derived)[7] |
|
| C [7] | |
| 11.1[1] | |
2826 Ahti, provisional designation 1939 UJ, is a carbonaceous asteroid from the outer region of the asteroid belt, about 37 kilometers in diameter. It was discovered on 18 October 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory, Southwest Finland.[9]
The C-type asteroid orbits the Sun at a distance of 3.1–3.4 AU once every 5 years and 9 months (2,113 days). Its orbit is tilted by 15 degrees to the plane of the ecliptic and shows an eccentricity of 0.05.[1] A photmetric light-curve analysis by French astronomer Pierre Antonini in 2006 rendered a relatively long rotation period of 24 hours. The result, however, is considered to be only provisional.[7][8]
According to the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Japanese Akari satellite, and the U.S. Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid's surface has a very low albedo in the range of 0.02 to 0.06. While the Collaborative Asteroid Lightcurve Link agrees with the asteroid's diameter of 37 kilometer found by IRAS, data from the Akari and WISE/NEOWISE mission give a larger diameter of 42 and 55 kilometers, respectively.[3][4][5][6]
The minor planet was named for the god of the sea and of fishing, Ahti (also known as Ahto), mentioned in the in Kalevala, a 19th-century work of epic poetry from Karelian and Finnish oral folklore and mythology. The minor planet 1454 Kalevala is named after the Finish national epic. Ahti is also a common boy's name in Finland.[2]
References
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- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 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.
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- ↑ 7.0 7.1 7.2 7.3 Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ 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
- 2826 Ahti at the JPL Small-Body Database
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