(230) Athamantis Main-belt Asteroid
Discovered on 3 September 1882 by K. de Ball at Bothkamp.
Where Athamantis is today
Seen from above the solar system on 2026-10-14: Athamantis is 2.27 au from the Sun and 1.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 230 |
| Provisional designation | A882 RA |
| Orbit class | Main-belt Asteroid |
| Diameter | 111 km (#191 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.164 |
| Rotation period | 24.0 hours |
| Spectral type | S |
| Absolute magnitude (H) | 7.43 |
| Orbital period | 3.68 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 2.24 – 2.53 au |
| Eccentricity | 0.0610 |
| Inclination | 9.45° |
| Closest distance between its orbit and Earth's (MOID) | 1.25 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.