(2571) Geisei Main-belt Asteroid
Discovered on 23 October 1981 by T. Seki at Geisei.
Where Geisei is today
Seen from above the solar system on 2026-10-14: Geisei is 2.58 au from the Sun and 3.57 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2571 |
| Provisional designation | 1981 UC |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.58 km (#8,148 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.275 |
| Rotation period | 7.82 hours |
| Absolute magnitude (H) | 13.23 |
| Orbital period | 3.33 years |
| Semi-major axis | 2.23 au |
| Perihelion – aphelion | 1.79 – 2.66 au |
| Eccentricity | 0.195 |
| Inclination | 2.87° |
| Closest distance between its orbit and Earth's (MOID) | 0.789 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.