(209540) Siurana Main-belt Asteroid
Discovered on 23 October 2004 by J. Manteca at Begues.
The village of Siurana, at the top of an escarpment in the Prades Mountains in the Montsant region of Catalonia, has a long history shared by ancient Romans, Greeks and Arabs. Its beautiful site at an altitude of 770 meters is visited by many tourists from around the world.Naming citation (20100527/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Siurana is today
Seen from above the solar system on 2026-10-14: Siurana is 2.22 au from the Sun and 2.26 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 209540 |
| Provisional designation | 2004 UK1 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.39 |
| Orbital period | 3.24 years |
| Semi-major axis | 2.19 au |
| Perihelion – aphelion | 1.86 – 2.52 au |
| Eccentricity | 0.152 |
| Inclination | 5.02° |
| Closest distance between its orbit and Earth's (MOID) | 0.869 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.