1520 Imatra
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 22 October 1938 |
| Designations | |
| MPC designation | 1520 Imatra |
|
Named after
|
Imatra (Finnish town)[2] |
| 1938 UY · 1938 YH | |
| main-belt · (outer) [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 77.03 yr (28,135 days) |
| Aphelion | 3.4135 AU |
| Perihelion | 2.8037 AU |
| 3.1086 AU | |
| Eccentricity | 0.0980 |
| 5.48 yr (2,002 days) | |
| 36.263° | |
| Inclination | 15.240° |
| 253.47° | |
| 116.37° | |
| Physical characteristics | |
| Dimensions | 53.61 km[4] 55.55±0.60 km[5] 56.094±1.824 km[6] 58.63±0.70 km[7] 53.45 km (derived)[3] |
| 18.635 h[8] 5.23 h[9] 18.609±0.004 h[10] |
|
| 0.0615[4] 0.058±0.002[5] 0.0561±0.0109[6] 0.039±0.009[7] 0.0469 (derived)[3] |
|
| SMASS = C C [3] |
|
| 10.4 | |
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1520 Imatra, provisional designation 1938 UY, is a large carbonaceous asteroid from the outer region of the asteroid belt, about 54 kilometers in diameter. It was discovered by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland on 22 October 1938.[11]
The dark C-type asteroid orbits the Sun at a distance of 2.8–3.4 AU once every 5 years and 6 months (2,002 days). Its orbit is tilted by 15 degrees to the plane of the ecliptic and shows an eccentricity of 0.10. It takes about 18.635 hours to rotate once around its axis.[8][9][10] According to the space-based surveys carried out by IRAS, Akari, WISE/NEOWISE, the body's low albedo is between 0.04 and 0.06.[4][5][6][7]
The minor planet is named for the south-eastern Finnish town Imatra, located in South Karelia near the Russian border, about half way in between St Petersburg and Finland's capital Helsinki.[2]
References
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<references />, or <references group="..." />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
- 1520 Imatra at the JPL Small-Body Database
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