(129277) Jianxinchen Main-belt Asteroid
Discovered on 6 September 2005 by CSS at Catalina.
Jianxin Chen (b. 1963) worked as the OSIRIS-REx Asteroid Sample Return Mission OCAMS Camera Control Module electronics architect and the FPGA designer. He also designed the Ion and Electron Spectrometer FPGA and controller on the Rosetta mission, and the C&DH module for the Ralph camera on New Horizons.Naming citation (MPC batch dated 2016-08-18), IAU / Minor Planet Center, via NASA/JPL
Where Jianxinchen is today
Seen from above the solar system on 2026-10-14: Jianxinchen is 2.10 au from the Sun and 2.22 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 129277 |
| Provisional designation | 2005 RC10 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 31.1 hours |
| Absolute magnitude (H) | 15.83 |
| Orbital period | 4.34 years |
| Semi-major axis | 2.66 au |
| Perihelion – aphelion | 1.98 – 3.35 au |
| Eccentricity | 0.258 |
| Inclination | 4.20° |
| Closest distance between its orbit and Earth's (MOID) | 0.967 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.