(18845) Cichocki Main-belt Asteroid
Discovered on 7 September 1999 by H. Mikuz at Crni Vrh.
Bruno Cichocki (1908-2001) was a civil engineer with a vivid interest in astronomy.Naming citation (20050919/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Cichocki is today
Seen from above the solar system on 2026-10-14: Cichocki is 2.89 au from the Sun and 2.48 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18845 |
| Provisional designation | 1999 RY27 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.69 km (#8,007 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.273 |
| Rotation period | 85.6 hours |
| Absolute magnitude (H) | 13.15 |
| Orbital period | 4.28 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 2.32 – 2.96 au |
| Eccentricity | 0.122 |
| Inclination | 12.6° |
| Closest distance between its orbit and Earth's (MOID) | 1.33 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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