(6300) Hosamu Outer Main-belt Asteroid
Discovered on 30 December 1988 by Hioki, T., Kawasato, N. at Okutama.
Osamu Hioki (b. 1960), an electronics engineer and a wireless operator, was a fellow member of the first discoverer in their high-school astronomical club.Naming citation (20030614/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hosamu is today
Seen from above the solar system on 2026-10-14: Hosamu is 3.60 au from the Sun and 3.80 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 6300 |
| Provisional designation | 1988 YB |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 12.5 km (#3,896 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0850 |
| Absolute magnitude (H) | 13.21 |
| Orbital period | 5.86 years |
| Semi-major axis | 3.25 au |
| Perihelion – aphelion | 2.88 – 3.62 au |
| Eccentricity | 0.115 |
| Inclination | 1.85° |
| Closest distance between its orbit and Earth's (MOID) | 1.89 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Osamu
- (5606) Muramatsu
- (7757) Kameya
- (8046) Ajiki
- (9845) Okamuraosamu
- (12479) Ohshimaosamu
- (13624) Abeosamu
- (13678) Shimada
All asteroids named after someone called Osamu