(21328) Otashi Main-belt Asteroid
Discovered on 11 January 1997 by T. Kobayashi at Oizumi.
In Mar. 2005 Ota city and three neighboring towns in the eastern part of Gunma prefecture were combined to form a new Ota city. Astronomical outreach is energetically carried out there by the Ota Uchuno Kai (Ota Astronomical Club).Naming citation (20050721/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Otashi is today
Seen from above the solar system on 2026-10-14: Otashi is 2.28 au from the Sun and 3.28 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21328 |
| Provisional designation | 1997 AM13 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.6 |
| Orbital period | 3.63 years |
| Semi-major axis | 2.36 au |
| Perihelion – aphelion | 2.26 – 2.46 au |
| Eccentricity | 0.0431 |
| Inclination | 7.17° |
| Closest distance between its orbit and Earth's (MOID) | 1.28 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called In
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All asteroids named after someone called In