(1446) Sillanpaa Main-belt Asteroid
Discovered on 26 January 1938 by Y. Vaisala at Turku.
Where Sillanpaa is today
Seen from above the solar system on 2026-10-14: Sillanpaa is 2.12 au from the Sun and 2.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1446 |
| Provisional designation | 1938 BA |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.17 km (#6,414 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.241 |
| Rotation period | 9.66 hours |
| Absolute magnitude (H) | 12.74 |
| Orbital period | 3.37 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 2.02 – 2.47 au |
| Eccentricity | 0.101 |
| Inclination | 5.25° |
| Closest distance between its orbit and Earth's (MOID) | 1.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 26 January 1938
More named asteroids discovered by Y. Vaisala
- (1391) Carelia
- (1398) Donnera
- (1405) Sibelius
- (1406) Komppa
- (1407) Lindelof
- (1421) Esperanto
- (1424) Sundmania
- (1447) Utra
- (1448) Lindbladia
- (1449) Virtanen
- (1450) Raimonda
- (1451) Grano
← (1445) Konkolya · (1447) Utra →