(28593) Ryanhamilton Main-belt Asteroid
Discovered on 11 March 2000 by LONEOS at Anderson Mesa.
Ryan Hamilton (b. 1983) is Lowell Observatory's Head of Instrumentation. He leads the maintenance, operation, and development efforts for myriad astronomical instruments across several sites, from the 4.3-m Lowell Discovery Telescope to the new Peggy and Eric Johnson 1-m Telescope, and many more.Naming citation (WGSBN Bull. 2, #12, 8), IAU / Minor Planet Center, via NASA/JPL
Where Ryanhamilton is today
Seen from above the solar system on 2026-10-14: Ryanhamilton is 2.77 au from the Sun and 3.29 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 28593 |
| Provisional designation | 2000 EZ133 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.23 km (#10,173 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.148 |
| Absolute magnitude (H) | 14.16 |
| Orbital period | 5.11 years |
| Semi-major axis | 2.97 au |
| Perihelion – aphelion | 2.77 – 3.17 au |
| Eccentricity | 0.0684 |
| Inclination | 10.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.76 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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