(6979) Shigefumi Main-belt Asteroid
Discovered on 12 September 1993 by Endate, K., Watanabe, K. at Kitami.
Named in honor of Shigefumi Mori (b. 1951), Japanese mathematician who was awarded the Fields Medal in 1990. He resolved Hartshorne's expectation.Naming citation (19980808/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Shigefumi is today
Seen from above the solar system on 2026-10-14: Shigefumi is 2.98 au from the Sun and 3.97 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 6979 |
| Provisional designation | 1993 RH |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.23 km (#6,369 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.253 |
| Rotation period | 11.9 hours |
| Absolute magnitude (H) | 12.45 |
| Orbital period | 4.32 years |
| Semi-major axis | 2.65 au |
| Perihelion – aphelion | 2.06 – 3.24 au |
| Eccentricity | 0.224 |
| Inclination | 14.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 12 September 1993
- (6978) Hironaka
- (7192) Cieletespace
- (8097) Yamanishi
- (9975) Takimotokoso
- (14469) Komatsuataka
- (46608) Yoshinokeiji