(16494) Oka Main-belt Asteroid
Discovered on 22 September 1990 by E. W. Elst at La Silla.
The Oka river has its source in the central Russian Upland. With a total length of 1490 km, it is the largest right tributary of the Volga. At the confluence with the Volga it meets the city of Nizhny Novgorod.Naming citation (20060613/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Oka is today
Seen from above the solar system on 2026-10-14: Oka is 3.08 au from the Sun and 3.48 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 16494 |
| Provisional designation | 1990 SP8 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.78 km (#5,935 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.158 |
| Absolute magnitude (H) | 13.17 |
| Orbital period | 5.35 years |
| Semi-major axis | 3.06 au |
| Perihelion – aphelion | 2.96 – 3.15 au |
| Eccentricity | 0.0308 |
| Inclination | 10.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.97 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 22 September 1990
- (5186) Donalu
- (6012) Williammurdoch
- (6268) Versailles
- (6605) Carmontelle
- (7412) Linnaeus
- (7578) Georgbohm
- (7649) Bougainville
- (7871) Tunder
- (9949) Brontosaurus
- (10088) Digne
- (10089) Turgot
- (10316) Williamturner