(5591) Koyo Main-belt Asteroid
Discovered on 10 November 1990 by T. Urata at Oohira.
Where Koyo is today
Seen from above the solar system on 2026-10-14: Koyo is 2.74 au from the Sun and 2.86 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5591 |
| Provisional designation | 1990 VF2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 17.1 km (#2,655 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0380 |
| Spectral type | Cb |
| Absolute magnitude (H) | 13.35 |
| Orbital period | 4.64 years |
| Semi-major axis | 2.78 au |
| Perihelion – aphelion | 2.54 – 3.02 au |
| Eccentricity | 0.0866 |
| Inclination | 4.24° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 10 November 1990
More named asteroids discovered by T. Urata
- (2090) Mizuho
- (5237) Yoshikawa
- (5484) Inoda
- (5520) Natori
- (5526) Kenzo
- (5683) Bifukumonin
- (5684) Kogo
- (6025) Naotosato
- (6101) Tomoki
- (6245) Ikufumi
- (6269) Kawasaki
- (6566) Shafter
← (5589) De Meis · (5592) Oshima →