(185640) Sunyisui Outer Main-belt Asteroid
Discovered on 1 March 2008 by PMO NEO Survey Program at XuYi.
Sun Yisui (b. 1936) is an astronomer who has made contributions to both celestial mechanics and nonlinear dynamics. Elected an academician of the Chinese Academy of Sciences in 1997, he has achieved important results in the qualitative theory of celestial mechanics and Hamiltonian dynamics.Naming citation (20100726/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Sunyisui is today
Seen from above the solar system on 2026-10-14: Sunyisui is 4.70 au from the Sun and 4.78 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 185640 |
| Provisional designation | 2008 EB34 |
| Orbit class | Outer Main-belt Asteroid |
| Absolute magnitude (H) | 14.53 |
| Orbital period | 7.89 years |
| Semi-major axis | 3.96 au |
| Perihelion – aphelion | 3.18 – 4.75 au |
| Eccentricity | 0.198 |
| Inclination | 7.61° |
| Closest distance between its orbit and Earth's (MOID) | 2.21 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Sun
- (15546) Sunyufeng
- (25570) Kesun
- (33979) Sunhaochun
- (148081) Sunjiadong
- (527205) Zhongdatianwen
- (546756) Sunguoyou
- (546846) Sunpeiyuan
- (616689) Yihangyiyang
All asteroids named after someone called Sun