(2379) Heiskanen Main-belt Asteroid
Discovered on 21 September 1941 by Y. Vaisala at Turku.
Where Heiskanen is today
Seen from above the solar system on 2026-10-14: Heiskanen is 2.30 au from the Sun and 1.92 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2379 |
| Provisional designation | 1941 ST |
| Orbit class | Main-belt Asteroid |
| Diameter | 33.2 km (#1,222 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0700 |
| Rotation period | 3.76 hours |
| Spectral type | C |
| Absolute magnitude (H) | 11.05 |
| Orbital period | 5.64 years |
| Semi-major axis | 3.17 au |
| Perihelion – aphelion | 2.30 – 4.04 au |
| Eccentricity | 0.275 |
| Inclination | 0.471° |
| Closest distance between its orbit and Earth's (MOID) | 1.28 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.