(618) Elfriede Main-belt Asteroid
Discovered on 17 October 1906 by K. Lohnert at Heidelberg.
Where Elfriede is today
Seen from above the solar system on 2026-10-14: Elfriede is 3.11 au from the Sun and 2.38 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 618 |
| Provisional designation | A906 UM |
| Orbit class | Main-belt Asteroid |
| Diameter | 131 km (#122 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0500 |
| Rotation period | 14.8 hours |
| Spectral type | C |
| Absolute magnitude (H) | 8.54 |
| Orbital period | 5.70 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 2.97 – 3.41 au |
| Eccentricity | 0.0682 |
| Inclination | 17.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.99 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.