(30805) Mikimasa Main-belt Asteroid
Discovered on 21 October 1989 by Endate, K., Watanabe, K. at Kitami.
Mikimasa Takeuchi (b. 1967) is a Japanese amateur astronomer and an astronomy curator at the Shimane Nature Museum of Mt. Sanbe in Oda City, Shimane Prefecture. He is currently the president of the Shimane Society of Astronomy and is a passionate popularizer of astronomy.Naming citation (WGSBN Bull. 5, #4, 6), IAU / Minor Planet Center, via NASA/JPL
Where Mikimasa is today
Seen from above the solar system on 2026-10-14: Mikimasa is 2.59 au from the Sun and 2.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 30805 |
| Provisional designation | 1989 UO2 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.44 |
| Orbital period | 4.03 years |
| Semi-major axis | 2.53 au |
| Perihelion – aphelion | 1.79 – 3.27 au |
| Eccentricity | 0.294 |
| Inclination | 6.06° |
| Closest distance between its orbit and Earth's (MOID) | 0.788 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.