(5640) Yoshino Main-belt Asteroid
Discovered on 21 October 1989 by Mukai, M., Takeishi, M. at Kagoshima.
Named for the hometown of the first discoverer. Part of Kagoshima City, it lies at the southern tip of Kyushu island.Naming citation (19990202/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Yoshino is today
Seen from above the solar system on 2026-10-14: Yoshino is 3.05 au from the Sun and 4.05 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5640 |
| Provisional designation | 1989 UR3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.79 km (#9,233 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.252 |
| Absolute magnitude (H) | 13.6 |
| Orbital period | 4.30 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 1.97 – 3.32 au |
| Eccentricity | 0.254 |
| Inclination | 3.13° |
| Closest distance between its orbit and Earth's (MOID) | 0.964 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 21 October 1989
More named asteroids discovered by Mukai, M., Takeishi, M.
- (4703) Kagoshima
- (5139) Rumoi
- (5286) Haruomukai
- (5468) Hamatonbetsu
- (5960) Wakkanai
- (8866) Tanegashima
- (9368) Esashi
- (10516) Sakurajima
- (11064) Dogen
- (14446) Kinkowan
- (15790) Keizan
- (48498) Murahashi
← (5639) Cuk · (5641) McCleese →