(29189) Udinsk Main-belt Asteroid
Discovered on 16 October 1990 by E. W. Elst at La Silla.
Udinsk (Ulan-Ude), southeast of Lake Baikal at the confluence of the Selenga and Uda rivers, is the capital of the Buryat Republic in Siberia. Founded in 1666 by Russian Cossacks, it rapidly became a large trade center connecting Russia with China and Mongolia.Naming citation (20071124/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Udinsk is today
Seen from above the solar system on 2026-10-14: Udinsk is 3.76 au from the Sun and 4.75 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29189 |
| Provisional designation | 1990 UY3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.41 km (#6,216 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.173 |
| Absolute magnitude (H) | 12.98 |
| Orbital period | 5.47 years |
| Semi-major axis | 3.10 au |
| Perihelion – aphelion | 2.36 – 3.85 au |
| Eccentricity | 0.239 |
| Inclination | 9.99° |
| Closest distance between its orbit and Earth's (MOID) | 1.38 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 16 October 1990
- (5135) Nibutani
- (5190) Fry
- (6317) Dreyfus
- (6606) Makino
- (6719) Gallaj
- (7650) Kaname
- (7763) Crabeels
- (8164) Andreasdoppler
- (9334) Moesta
- (9587) Bonpland
- (10769) Minas Gerais
- (12708) Van Straten