(429031) Hannavonhoerner Main-belt Asteroid
Discovered on 11 February 2009 by F. Hormuth at Calar Alto.
Hanna von Hoerner (1942-2014) was a German astrophysicist and space entrepreneur. After studying physics at Heidelberg University she founded a company involved in the development of space instrumentation, primarily for solar system missions, such as Rosetta's COSIMA mass spectrometer.Naming citation (MPC batch dated 2016-11-14), IAU / Minor Planet Center, via NASA/JPL
Where Hannavonhoerner is today
Seen from above the solar system on 2026-10-14: Hannavonhoerner is 3.39 au from the Sun and 4.39 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 429031 |
| Provisional designation | 2009 CJ4 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.55 |
| Orbital period | 5.44 years |
| Semi-major axis | 3.09 au |
| Perihelion – aphelion | 2.79 – 3.39 au |
| Eccentricity | 0.0975 |
| Inclination | 9.70° |
| Closest distance between its orbit and Earth's (MOID) | 1.79 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Hanna
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