(217576) Klausbirkner Main-belt Asteroid
Discovered on 29 December 2007 by Martin, A., Boeker, A. at Mulheim-Ruhr.
Klaus Birkner (b. 1959) is a long-time amateur astronomer and co-founder of the AAEM Observatory near Velbert, Germany. Because of his job-related and astronomical experiences, he is also a valuable supporter of the discoverers' observatory.Naming citation (MPC batch dated 2014-02-14), IAU / Minor Planet Center, via NASA/JPL
Where Klausbirkner is today
Seen from above the solar system on 2026-10-14: Klausbirkner is 3.60 au from the Sun and 4.13 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 217576 |
| Provisional designation | 2007 YX56 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.14 |
| Orbital period | 5.25 years |
| Semi-major axis | 3.02 au |
| Perihelion – aphelion | 2.30 – 3.74 au |
| Eccentricity | 0.239 |
| Inclination | 5.55° |
| Closest distance between its orbit and Earth's (MOID) | 1.32 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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