(12220) Semenchur Main-belt Asteroid
Discovered on 20 October 1982 by L. G. Karachkina at Nauchnyj.
Semen Ivanovich Churyumov (b. 1934), doctor of philosophy and socionics, was for many years senior lecturer in the mathematics department at the Kiev National Aviation University.Naming citation (20050919/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Semenchur is today
Seen from above the solar system on 2026-10-14: Semenchur is 1.92 au from the Sun and 1.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12220 |
| Provisional designation | 1982 UD6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.99 km (#15,241 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.377 |
| Rotation period | 5.99 hours |
| Absolute magnitude (H) | 14.63 |
| Orbital period | 3.38 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 1.92 – 2.58 au |
| Eccentricity | 0.148 |
| Inclination | 3.19° |
| Closest distance between its orbit and Earth's (MOID) | 0.927 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Semen
All asteroids named after someone called Semen
Also discovered on 20 October 1982
- (3437) Kapitsa
- (4475) Voitkevich
- (4625) Shchedrin
- (5094) Seryozha
- (5247) Krylov
- (5717) Damir
- (5941) Valencia
- (6766) Kharms
- (7632) Stanislav
- (8142) Zolotov
- (8811) Waltherschmadel
- (8812) Kravtsov