(5939) Toshimayeda Main-belt Asteroid
Discovered on 1 March 1981 by S. J. Bus at Siding Spring.
Toshiko Mayeda (b. 1923), senior research associate at the University of Chicago Enrico Fermi Institute, has produced a comprehensive body of data on oxygen isotopes in meteorites. These data have provided an essential tool for the classification of meteorites, and for relating meteorites to their parent bodies.Naming citation (20020624/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Toshimayeda is today
Seen from above the solar system on 2026-10-14: Toshimayeda is 3.04 au from the Sun and 4.03 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5939 |
| Provisional designation | 1981 EU8 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.05 km (#8,853 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.253 |
| Absolute magnitude (H) | 13.3 |
| Orbital period | 4.53 years |
| Semi-major axis | 2.74 au |
| Perihelion – aphelion | 2.35 – 3.12 au |
| Eccentricity | 0.141 |
| Inclination | 9.35° |
| Closest distance between its orbit and Earth's (MOID) | 1.38 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Toshiko
All asteroids named after someone called Toshiko
Also discovered on 1 March 1981
- (2788) Andenne
- (3016) Meuse
- (3029) Sanders
- (3030) Vehrenberg
- (3042) Zelinsky
- (3058) Delmary
- (3075) Bornmann
- (3135) Lauer
- (3308) Ferreri
- (3472) Upgren
- (3498) Belton
- (3503) Brandt