(5740) Toutoumi Main-belt Asteroid
Discovered on 29 November 1989 by Y. Oshima at Gekko.
Named for the area in the western part of Shizuoka prefecture that is the location of the Nakano-Gakuen Astro-Geological College. Several of its graduates have worked at the observatories belonging to the International Foundation for Cultural Harmony.Naming citation (19990202/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Toutoumi is today
Seen from above the solar system on 2026-10-14: Toutoumi is 2.97 au from the Sun and 3.20 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5740 |
| Provisional designation | 1989 WM3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.86 km (#5,864 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.191 |
| Rotation period | 11.7 hours |
| Absolute magnitude (H) | 12.7 |
| Orbital period | 4.26 years |
| Semi-major axis | 2.63 au |
| Perihelion – aphelion | 2.12 – 3.13 au |
| Eccentricity | 0.192 |
| Inclination | 13.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.14 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 29 November 1989
- (4382) Stravinsky
- (5910) Zatopek
- (8011) Saijokeiichi
- (8087) Kazutaka
- (8273) Apatheia
- (15248) Hidekazu
- (15716) Narahara
- (26828) Narusawa
- (29167) Masataka