(2120) Tyumenia Main-belt Asteroid
Discovered on 9 September 1967 by T. M. Smirnova at Nauchnyj.
Named for the Tyumen' district of the R.S.F.S.R., the center of the West Siberian oil-gas basin that has become in recent years the main source of power in the U.S.S.R.Naming citation (MPC 5283), IAU / Minor Planet Center, via NASA/JPL
Where Tyumenia is today
Seen from above the solar system on 2026-10-14: Tyumenia is 2.88 au from the Sun and 1.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2120 |
| Provisional designation | 1967 RM |
| Orbit class | Main-belt Asteroid |
| Diameter | 51.5 km (#717 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0680 |
| Rotation period | 17.5 hours |
| Absolute magnitude (H) | 11.04 |
| Orbital period | 5.35 years |
| Semi-major axis | 3.06 au |
| Perihelion – aphelion | 2.67 – 3.45 au |
| Eccentricity | 0.127 |
| Inclination | 17.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.72 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.