(1398) Donnera Main-belt Asteroid
Discovered on 26 August 1936 by Y. Vaisala at Turku.
Where Donnera is today
Seen from above the solar system on 2026-10-14: Donnera is 2.85 au from the Sun and 1.89 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1398 |
| Provisional designation | 1936 QL |
| Orbit class | Main-belt Asteroid |
| Diameter | 24.6 km (#1,725 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.267 |
| Rotation period | 7.23 hours |
| Absolute magnitude (H) | 10.23 |
| Orbital period | 5.62 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.85 – 3.47 au |
| Eccentricity | 0.0990 |
| Inclination | 11.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.87 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.