(12084) Unno Main-belt Asteroid
Discovered on 22 March 1998 by T. Seki at Geisei.
Juza Unno (Sano Shoichi, 1897-1949) was a mystery writer and pioneer of Japanese science fiction. The Martian Army, published in 1940, aroused the curiosity of young Japanese about space. A monument dedicated to him stands in the park in Tokusima, his native city.Naming citation (20060413/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Unno is today
Seen from above the solar system on 2026-10-14: Unno is 2.54 au from the Sun and 3.20 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12084 |
| Provisional designation | 1998 FL125 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.47 km (#9,755 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.310 |
| Absolute magnitude (H) | 13.47 |
| Orbital period | 4.15 years |
| Semi-major axis | 2.58 au |
| Perihelion – aphelion | 2.34 – 2.82 au |
| Eccentricity | 0.0927 |
| Inclination | 13.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.34 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 22 March 1998
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- (9122) Hunten
- (11695) Mattei
- (11696) Capen
- (11704) Gorin
- (12079) Kaibab
- (12496) Ekholm
- (13234) Natashaowen
- (15970) Robertbrownlee
- (17776) Troska
- (17822) Tonireland
- (20315) Dotson