(189202) Calar Alto Outer Main-belt Asteroid
Discovered on 17 September 2003 by F. Hormuth at Heppenheim.
The Calar Alto Observatory is located in the Sierra de los Filabres in Andalusia, southern Spain. With its 3.6-m, 2.2-m, 1.5-m and 1.2-m telescopes it is the largest optical observatory on the European continent. It has been actively involved in observation of solar-system objects since its foundation in 1975.Naming citation (20081113/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Calar Alto is today
Seen from above the solar system on 2026-10-14: Calar Alto is 3.14 au from the Sun and 2.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 189202 |
| Provisional designation | 2003 SM15 |
| Orbit class | Outer Main-belt Asteroid |
| Absolute magnitude (H) | 15.41 |
| Orbital period | 5.77 years |
| Semi-major axis | 3.22 au |
| Perihelion – aphelion | 3.01 – 3.42 au |
| Eccentricity | 0.0641 |
| Inclination | 16.6° |
| Closest distance between its orbit and Earth's (MOID) | 2.05 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.