(209083) Rioja Main-belt Asteroid
Discovered on 17 September 2003 by F. Hormuth at Heppenheim.
Rioja is a wine made from grapes grown in the autonomous community of La Rioja and in parts of Navarre and the Basque province of Álava. The most widely-used grape is the richly flavored Tempranillo. The discoverer remembers this wine well from occasional otherwise cheerless cloudy Spanish observing nights.Naming citation (20100330/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Rioja is today
Seen from above the solar system on 2026-10-14: Rioja is 2.79 au from the Sun and 2.44 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 209083 |
| Provisional designation | 2003 SN15 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.64 |
| Orbital period | 4.41 years |
| Semi-major axis | 2.69 au |
| Perihelion – aphelion | 2.51 – 2.87 au |
| Eccentricity | 0.0673 |
| Inclination | 6.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.50 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.