(9986) Hirokun Main-belt Asteroid
Discovered on 12 July 1996 by Shimizu, Y., Urata, T. at Nachi-Katsuura.
Hirokun is a nickname for Hiroshi Fukazawa, who was the fiancé of Mizuho Urata (1972-2004), daughter of the second discoverer.Naming citation (20050721/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hirokun is today
Seen from above the solar system on 2026-10-14: Hirokun is 2.72 au from the Sun and 1.85 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9986 |
| Provisional designation | 1996 NX |
| Orbit class | Main-belt Asteroid |
| Rotation period | 6.96 hours |
| Absolute magnitude (H) | 12.62 |
| Orbital period | 4.12 years |
| Semi-major axis | 2.57 au |
| Perihelion – aphelion | 2.42 – 2.72 au |
| Eccentricity | 0.0584 |
| Inclination | 14.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.42 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Hiroshi
- (4965) Takeda
- (5379) Abehiroshi
- (5830) Simohiro
- (6244) Okamoto
- (7250) Kinoshita
- (7254) Kuratani
- (7264) Hirohatanaka
- (8197) Mizunohiroshi
- (8543) Tsunemi
- (8707) Arakihiroshi
- (8891) Irokawa
- (8923) Yamakawa
All asteroids named after someone called Hiroshi
Also discovered on 12 July 1996
More named asteroids discovered by Shimizu, Y., Urata, T.
- (6160) Minakata
- (6834) Hunfeld
- (6838) Okuda
- (7031) Kazumiyoshioka
- (7032) Hitchcock
- (7036) Kentarohirata
- (7037) Davidlean
- (7259) Gaithersburg
- (7264) Hirohatanaka
- (7307) Takei
- (7308) Hattori
- (7502) Arakida
← (9985) Akiko · (9987) Peano →