(661) Cloelia Main-belt Asteroid
Discovered on 22 February 1908 by J. H. Metcalf at Taunton.
Where Cloelia is today
Seen from above the solar system on 2026-10-14: Cloelia is 3.10 au from the Sun and 2.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 661 |
| Provisional designation | A908 DD |
| Orbit class | Main-belt Asteroid |
| Diameter | 40.1 km (#969 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.182 |
| Rotation period | 5.54 hours |
| Spectral type | S |
| Absolute magnitude (H) | 9.73 |
| Orbital period | 5.23 years |
| Semi-major axis | 3.01 au |
| Perihelion – aphelion | 2.90 – 3.13 au |
| Eccentricity | 0.0392 |
| Inclination | 9.25° |
| Closest distance between its orbit and Earth's (MOID) | 1.91 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.