(18643) van Rysselberghe Main-belt Asteroid
Discovered on 1 March 1998 by E. W. Elst at La Silla.
Théo van Rysselberghe (1862-1926) was a Belgian pointillistic painter (Family in the orchard, 1890) who had been influenced by Georges Seurat. After the death of Seurat in 1891, van Rysselberghe gradually abandoned pointillism and returned to the classic French impressionistic style of painting.Naming citation (20070402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where van Rysselberghe is today
Seen from above the solar system on 2026-10-14: van Rysselberghe is 2.45 au from the Sun and 2.08 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18643 |
| Provisional designation | 1998 EK12 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.75 km (#9,287 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.369 |
| Absolute magnitude (H) | 13.43 |
| Orbital period | 4.44 years |
| Semi-major axis | 2.70 au |
| Perihelion – aphelion | 2.44 – 2.96 au |
| Eccentricity | 0.0965 |
| Inclination | 10.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.45 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Theo
All asteroids named after someone called Theo
Also discovered on 1 March 1998
- (8743) Keneke
- (11363) Vives
- (11681) Ortner
- (12059) du Chatelet
- (15969) Charlesgreen
- (17770) Baume
- (17771) Elsheimer
- (19400) Emileclaus
- (20246) Frappa
- (20249) Bincheng
- (20250) Burdanov
- (20251) Carminegiordano