(2112) Ulyanov Main-belt Asteroid
Discovered on 13 July 1972 by T. M. Smirnova at Nauchnyj.
Named in memory of Aleksandr Ulyanov (1866-1887), eldest brother of V. I. Lenin.Naming citation (MPC 5283), IAU / Minor Planet Center, via NASA/JPL
Where Ulyanov is today
Seen from above the solar system on 2026-10-14: Ulyanov is 2.19 au from the Sun and 2.01 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2112 |
| Provisional designation | 1972 NP |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.48 km (#7,122 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.380 |
| Rotation period | 3.04 hours |
| Absolute magnitude (H) | 12.5 |
| Orbital period | 3.38 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 1.94 – 2.56 au |
| Eccentricity | 0.137 |
| Inclination | 3.37° |
| Closest distance between its orbit and Earth's (MOID) | 0.952 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Aleksandr
- (2208) Pushkin
- (4420) Alandreev
- (5014) Gorchakov
- (5219) Zemka
- (6075) Zajtsev
- (7269) Alprokhorov
- (7558) Yurlov
- (7910) Aleksola
- (7996) Vedernikov
- (8322) Kononovich
- (8339) Kosovichia
- (9514) Deineka
All asteroids named after someone called Aleksandr
Also discovered on 13 July 1972
More named asteroids discovered by T. M. Smirnova
- (1774) Kulikov
- (1791) Patsayev
- (1793) Zoya
- (1804) Chebotarev
- (1835) Gajdariya
- (1854) Skvortsov
- (1857) Parchomenko
- (1900) Katyusha
- (1902) Shaposhnikov
- (1903) Adzhimushkaj
- (1904) Massevitch
- (1905) Ambartsumian
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