(1656) Suomi Mars-crossing Asteroid
Discovered on 11 March 1942 by Y. Vaisala at Turku.
Where Suomi is today
Seen from above the solar system on 2026-10-14: Suomi is 1.65 au from the Sun and 2.02 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1656 |
| Provisional designation | 1942 EC |
| Orbit class | Mars-crossing Asteroid |
| Diameter | 7.86 km (#6,718 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.156 |
| Rotation period | 2.59 hours |
| Spectral type | S |
| Absolute magnitude (H) | 12.91 |
| Orbital period | 2.57 years |
| Semi-major axis | 1.88 au |
| Perihelion – aphelion | 1.65 – 2.11 au |
| Eccentricity | 0.123 |
| Inclination | 25.1° |
| Closest distance between its orbit and Earth's (MOID) | 0.754 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.