(5291) Yuuko Main-belt Asteroid
Discovered on 20 December 1990 by Matsuyama, M., Watanabe, K. at Kushiro.
Where Yuuko is today
Seen from above the solar system on 2026-10-14: Yuuko is 2.54 au from the Sun and 2.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5291 |
| Provisional designation | 1990 YT |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.32 km (#10,011 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.359 |
| Absolute magnitude (H) | 13.5 |
| Orbital period | 3.77 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.05 – 2.80 au |
| Eccentricity | 0.154 |
| Inclination | 2.05° |
| Closest distance between its orbit and Earth's (MOID) | 1.05 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.