(15321) Donnadean Main-belt Asteroid
Discovered on 13 August 1993 by Shoemaker, C. S., Levy, D. H. at Palomar.
With his wife Donna, Dean Koenig (b. 1956) has devoted years to inspiring people to become interested in the night sky. Through observing sessions and other facilities of his store “Starizona”, located in Tucson, Arizona, Koenig has a fine record of restoring and repairing telescopes.Naming citation (20001111/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Donnadean is today
Seen from above the solar system on 2026-10-14: Donnadean is 2.66 au from the Sun and 2.45 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15321 |
| Provisional designation | 1993 PE8 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.94 km (#10,730 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.263 |
| Absolute magnitude (H) | 14.16 |
| Orbital period | 3.58 years |
| Semi-major axis | 2.34 au |
| Perihelion – aphelion | 1.70 – 2.98 au |
| Eccentricity | 0.272 |
| Inclination | 24.0° |
| Closest distance between its orbit and Earth's (MOID) | 0.745 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Dean
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