(6557) Yokonomura Main-belt Asteroid
Discovered on 11 November 1990 by Nomura, T., Kawanishi, K. at Minami-Oda.
Named in honor of Yoko Nomura (b. 1950), wife of the first discoverer and an independent discoverer of comet C/1975 N1. “Yoko” means “a child of the sun”.Naming citation (19990728/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Yokonomura is today
Seen from above the solar system on 2026-10-14: Yokonomura is 3.66 au from the Sun and 4.65 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 6557 |
| Provisional designation | 1990 VR3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 16.0 km (#2,903 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0880 |
| Absolute magnitude (H) | 12.53 |
| Orbital period | 5.60 years |
| Semi-major axis | 3.15 au |
| Perihelion – aphelion | 2.55 – 3.76 au |
| Eccentricity | 0.192 |
| Inclination | 7.81° |
| Closest distance between its orbit and Earth's (MOID) | 1.56 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Yoko
All asteroids named after someone called Yoko
Also discovered on 11 November 1990
- (5648) Axius
- (6155) Yokosugano
- (6720) Gifu
- (6965) Niyodogawa
- (7178) Ikuookamoto
- (7241) Kuroda
- (7242) Okyudo
- (8275) Inca
- (10091) Bandaisan
- (10322) Mayuminarita
- (11510) Borges
- (16514) Stevelia