(25594) Kessler Main-belt Asteroid
Discovered on 29 December 1999 by Hug, G., Bell, G. at Eskridge.
Marvin Kessler (b. 1918) has been a member of the Northeast Kansas Amateur Astronomer's League for over twenty years. He has been quietly but enthusiastically showing the wonders of the night sky to anyone interested from preschool age children to senior adults. His zeal and patience in this endeavor have been exemplary.Naming citation (20020427/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Kessler is today
Seen from above the solar system on 2026-10-14: Kessler is 3.16 au from the Sun and 4.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 25594 |
| Provisional designation | 1999 YA9 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.35 km (#7,264 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.157 |
| Rotation period | 81.4 hours |
| Absolute magnitude (H) | 13.77 |
| Orbital period | 5.13 years |
| Semi-major axis | 2.97 au |
| Perihelion – aphelion | 2.79 – 3.16 au |
| Eccentricity | 0.0637 |
| Inclination | 10.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.79 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Marvin
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