(1495) Helsinki Main-belt Asteroid
Discovered on 21 September 1938 by Y. Vaisala at Turku.
Where Helsinki is today
Seen from above the solar system on 2026-10-14: Helsinki is 2.77 au from the Sun and 3.63 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1495 |
| Provisional designation | 1938 SW |
| Orbit class | Main-belt Asteroid |
| Diameter | 12.2 km (#3,988 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.274 |
| Rotation period | 5.33 hours |
| Absolute magnitude (H) | 11.65 |
| Orbital period | 4.29 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 2.23 – 3.05 au |
| Eccentricity | 0.154 |
| Inclination | 12.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.26 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 21 September 1938
More named asteroids discovered by Y. Vaisala
- (1391) Carelia
- (1398) Donnera
- (1405) Sibelius
- (1406) Komppa
- (1407) Lindelof
- (1421) Esperanto
- (1424) Sundmania
- (1446) Sillanpaa
- (1447) Utra
- (1448) Lindbladia
- (1449) Virtanen
- (1450) Raimonda
← (1494) Savo · (1496) Turku →