1536 Pielinen
| Discovery | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 18 September 1939 |
| Designations | |
| (1536) Pielinen | |
Named after | Pielinen (lake) |
| 1939 SE · 1929 RZ 1931 ED · 1934 CW 1939 TP · 1939 UK 1952 RW · A903 SF A916 RA | |
| main-belt · Flora | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.68 yr (41,521 days) |
| Aphelion | 2.6342 AU |
| Perihelion | 1.7736 AU |
| 2.2039 AU | |
| Eccentricity | 0.1953 |
| 3.27 yr (1,195 days) | |
| 295.85° | |
| 0° 18m 4.32s / day | |
| Inclination | 1.5344° |
| 195.69° | |
| 170.76° | |
| Physical characteristics | |
| Dimensions | 7.38±1.62 km 7.82 km (calculated) 7.934±0.037 km 7.975±0.109 km |
| 66.1±0.1 h 66.22 h 66.34±0.02 h 67.43±0.06 h | |
| 0.24 (assumed) 0.253±0.017 0.2557±0.0662 0.30±0.21 | |
| S | |
| 12.57±0.52 · 12.6 · 12.7 | |
1536 Pielinen (provisional designation 1939 SE) is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7.8 kilometers in diameter. It was discovered on 18 September 1939, by Finnish astronomer Yrjö Väisälä at Turku Observatory, Southwest Finland. It was later named for Finnish lake Pielinen.