(129234) Silly Main-belt Asteroid
Discovered on 8 August 2005 by B. Christophe at Saint-Sulpice.
Didier Silly (b. 1950), a long-time colleague and friend of the discoverer, recently started a business building benches for testing optical and laser systems. They have observed together with the T60 at Pic du Midi and spent many weekends machining the mechanical parts of the discoverer's telescope.Naming citation (20060613/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Silly is today
Seen from above the solar system on 2026-10-14: Silly is 2.31 au from the Sun and 1.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 129234 |
| Provisional designation | 2005 PS5 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.07 |
| Orbital period | 3.36 years |
| Semi-major axis | 2.24 au |
| Perihelion – aphelion | 2.16 – 2.33 au |
| Eccentricity | 0.0382 |
| Inclination | 6.68° |
| Closest distance between its orbit and Earth's (MOID) | 1.16 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Didier
- (20896) Tiphene
- (21156) Didierlockwood
- (145559) Didiermuller
- (177415) Queloz
- (188506) Roulet
- (275215) Didiermarouani
- (278225) Didierpelat
All asteroids named after someone called Didier