(3857) Cellino Main-belt Asteroid
Discovered on 8 February 1984 by E. Bowell at Anderson Mesa.
Where Cellino is today
Seen from above the solar system on 2026-10-14: Cellino is 2.69 au from the Sun and 1.71 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3857 |
| Provisional designation | 1984 CD1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.84 km (#9,161 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.226 |
| Rotation period | 3.66 hours |
| Absolute magnitude (H) | 13.56 |
| Orbital period | 3.70 years |
| Semi-major axis | 2.39 au |
| Perihelion – aphelion | 2.01 – 2.78 au |
| Eccentricity | 0.161 |
| Inclination | 3.09° |
| Closest distance between its orbit and Earth's (MOID) | 0.997 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.