(11930) Osamu Main-belt Asteroid
Discovered on 15 February 1993 by Hioki, T., Hayakawa, S. at Okutama.
Oshima Osamu (b. 1959) is a leading amateur astronomer and science teacher in Gunma prefecture and volunteer science instructor in great favor with children. His interests in astronomy are wide, currently CCD imaging of planetary nebulae.Naming citation (20010705/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Osamu is today
Seen from above the solar system on 2026-10-14: Osamu is 2.54 au from the Sun and 3.40 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11930 |
| Provisional designation | 1993 CJ1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.35 km (#11,957 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.408 |
| Absolute magnitude (H) | 13.83 |
| Orbital period | 4.12 years |
| Semi-major axis | 2.57 au |
| Perihelion – aphelion | 2.32 – 2.82 au |
| Eccentricity | 0.0968 |
| Inclination | 13.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.33 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 15 February 1993
More named asteroids discovered by Hioki, T., Hayakawa, S.
- (4384) Henrybuhl
- (5138) Gyoda
- (5142) Okutama
- (5238) Naozane
- (5339) Desmars
- (5629) Kuwana
- (5783) Kumagaya
- (5822) Masakichi
- (6071) Sakitama
- (6094) Hisako
- (6198) Shirakawa
- (7429) Hoshikawa
← (11929) Uchino · (11933) Himuka →