(29) Amphitrite Main-belt Asteroid
Discovered on 1 March 1854 by A. Marth at London.
Where Amphitrite is today
Seen from above the solar system on 2026-10-14: Amphitrite is 2.69 au from the Sun and 3.09 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29 |
| Provisional designation | A854 EB |
| Orbit class | Main-belt Asteroid |
| Diameter | 190 km (#39 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.216 |
| Rotation period | 5.39 hours |
| Spectral type | S |
| Absolute magnitude (H) | 5.97 |
| Orbital period | 4.08 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 2.37 – 2.74 au |
| Eccentricity | 0.0732 |
| Inclination | 6.08° |
| Closest distance between its orbit and Earth's (MOID) | 1.39 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 1 March 1854
← (28) Bellona · (30) Urania →