(18647) Vaclavhubner Main-belt Asteroid
Discovered on 21 March 1998 by P. Pravec at Ondrejov.
Václav Hübner (1922-2000) was an enthusiastic amateur astronomer who contributed much to astronomical education and amateur astronomical activities in Pardubice and elsewhere in eastern Bohemia.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Vaclavhubner is today
Seen from above the solar system on 2026-10-14: Vaclavhubner is 2.44 au from the Sun and 3.44 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18647 |
| Provisional designation | 1998 FD2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.73 km (#15,800 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.198 |
| Rotation period | 33.1 hours |
| Absolute magnitude (H) | 15.44 |
| Orbital period | 4.05 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.43 – 2.65 au |
| Eccentricity | 0.0423 |
| Inclination | 3.72° |
| Closest distance between its orbit and Earth's (MOID) | 1.44 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.