(354) Eleonora Main-belt Asteroid
Discovered on 17 January 1893 by A. Charlois at Nice.
Where Eleonora is today
Seen from above the solar system on 2026-10-14: Eleonora is 3.11 au from the Sun and 2.57 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 354 |
| Provisional designation | A893 BC |
| Orbit class | Main-belt Asteroid |
| Diameter | 149 km (#81 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.201 |
| Rotation period | 4.28 hours |
| Spectral type | S |
| Absolute magnitude (H) | 6.17 |
| Orbital period | 4.69 years |
| Semi-major axis | 2.80 au |
| Perihelion – aphelion | 2.49 – 3.11 au |
| Eccentricity | 0.112 |
| Inclination | 18.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.50 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.