(429032) Sebvonhoerner Main-belt Asteroid
Discovered on 12 February 2009 by F. Hormuth at Calar Alto.
Sebastian von Hoerner (1919-2003) was a German astrophysicist and radio astronomer. After graduation and habilitation at Heidelberg he moved to the Green Bank radio observatory, contributing to the optimisation of radio telescope designs. He became one of the pioneers of the search for extraterrestrial intelligence.Naming citation (MPC batch dated 2016-11-14), IAU / Minor Planet Center, via NASA/JPL
Where Sebvonhoerner is today
Seen from above the solar system on 2026-10-14: Sebvonhoerner is 2.77 au from the Sun and 3.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 429032 |
| Provisional designation | 2009 CN4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.04 km (#15,121 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0530 |
| Absolute magnitude (H) | 16.36 |
| Orbital period | 5.42 years |
| Semi-major axis | 3.09 au |
| Perihelion – aphelion | 2.69 – 3.49 au |
| Eccentricity | 0.129 |
| Inclination | 10.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.71 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Sebastian
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