(2122) Pyatiletka Main-belt Asteroid
Discovered on 14 December 1971 by T. M. Smirnova at Nauchnyj.
Named on the 50th anniversary of the adoption of the first five-year plan for the development of the national economy of the U.S.S.R.Naming citation (MPC 5283), IAU / Minor Planet Center, via NASA/JPL
Where Pyatiletka is today
Seen from above the solar system on 2026-10-14: Pyatiletka is 2.33 au from the Sun and 1.70 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2122 |
| Provisional designation | 1971 XB |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.1 km (#4,517 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.224 |
| Rotation period | 8.90 hours |
| Absolute magnitude (H) | 12.12 |
| Orbital period | 3.72 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 2.33 – 2.47 au |
| Eccentricity | 0.0302 |
| Inclination | 7.90° |
| Closest distance between its orbit and Earth's (MOID) | 1.33 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.