(1678) Hveen Main-belt Asteroid
Discovered on 28 December 1940 by Y. Vaisala at Turku.
Where Hveen is today
Seen from above the solar system on 2026-10-14: Hveen is 3.18 au from the Sun and 4.17 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1678 |
| Provisional designation | 1940 YH |
| Orbit class | Main-belt Asteroid |
| Diameter | 42.7 km (#905 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0350 |
| Rotation period | 5.99 hours |
| Absolute magnitude (H) | 11.01 |
| Orbital period | 5.61 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.82 – 3.50 au |
| Eccentricity | 0.108 |
| Inclination | 10.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.85 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.