(214863) Seiradakis Main-belt Asteroid
Discovered on 27 December 2006 by Mt. Lemmon Survey at Mount Lemmon.
John H. Seiradakis (b. 1948) is a Greek radio astronomer, emeritus professor at Aristotle University of Thessaloniki, and former Director of the Observatory of Thessaloniki. He has contributed significantly to our knowledge of pulsars, archaeoastronomy, and of the Antikythera Mechanism, the earliest known astronomical computer.Naming citation (WGSBN Bull. 3, #1, 6), IAU / Minor Planet Center, via NASA/JPL
Where Seiradakis is today
Seen from above the solar system on 2026-10-14: Seiradakis is 2.88 au from the Sun and 3.82 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 214863 |
| Provisional designation | 2006 YB55 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.8 |
| Orbital period | 4.59 years |
| Semi-major axis | 2.76 au |
| Perihelion – aphelion | 2.63 – 2.90 au |
| Eccentricity | 0.0499 |
| Inclination | 4.50° |
| Closest distance between its orbit and Earth's (MOID) | 1.64 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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