(124) Alkeste Main-belt Asteroid
Discovered on 23 August 1872 by C. H. F. Peters at Clinton.
Where Alkeste is today
Seen from above the solar system on 2026-10-14: Alkeste is 2.76 au from the Sun and 1.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 124 |
| Provisional designation | A872 QA |
| Orbit class | Main-belt Asteroid |
| Diameter | 88.6 km (#301 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.128 |
| Rotation period | 9.91 hours |
| Spectral type | S |
| Absolute magnitude (H) | 8.05 |
| Orbital period | 4.26 years |
| Semi-major axis | 2.63 au |
| Perihelion – aphelion | 2.42 – 2.84 au |
| Eccentricity | 0.0785 |
| Inclination | 2.96° |
| Closest distance between its orbit and Earth's (MOID) | 1.41 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.