(297) Caecilia Main-belt Asteroid
Discovered on 9 September 1890 by A. Charlois at Nice.
Where Caecilia is today
Seen from above the solar system on 2026-10-14: Caecilia is 2.92 au from the Sun and 1.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 297 |
| Provisional designation | A890 RA |
| Orbit class | Main-belt Asteroid |
| Diameter | 39.5 km (#990 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.180 |
| Rotation period | 4.16 hours |
| Absolute magnitude (H) | 9.21 |
| Orbital period | 5.64 years |
| Semi-major axis | 3.17 au |
| Perihelion – aphelion | 2.73 – 3.61 au |
| Eccentricity | 0.138 |
| Inclination | 7.55° |
| Closest distance between its orbit and Earth's (MOID) | 1.72 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.