(17428) Charleroi Outer Main-belt Asteroid
Discovered on 28 February 1989 by H. Debehogne at La Silla.
Charleroi, built in 1666 on both sides of the Sambre river, is the largest city in Wallonia. Traces of metallurgy and commercial activity from prehistoric times have been found there, and the Romans built several temples and villas in the vicinity. The area is also known for its coal-mining industry, now terminated.Naming citation (20081113/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Charleroi is today
Seen from above the solar system on 2026-10-14: Charleroi is 4.22 au from the Sun and 3.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 17428 |
| Provisional designation | 1989 DL |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 30.3 km (#1,348 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0640 |
| Rotation period | 5.33 hours |
| Absolute magnitude (H) | 11.47 |
| Orbital period | 7.80 years |
| Semi-major axis | 3.93 au |
| Perihelion – aphelion | 3.49 – 4.38 au |
| Eccentricity | 0.113 |
| Inclination | 8.42° |
| Closest distance between its orbit and Earth's (MOID) | 2.49 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.