(8491) Joelle-gilles Main-belt Asteroid
Discovered on 28 December 1989 by E. W. Elst at Haute Provence.
Joelle (b. 1978) and Gilles (b. 1980) are the children of Martina Devos and Alain Meerbergen, close friends of the discoverer and his family. They spent a marvelous vacation together at Haute Provence, where this minor planet was discovered.Naming citation (20021120/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Joelle-gilles is today
Seen from above the solar system on 2026-10-14: Joelle-gilles is 2.35 au from the Sun and 1.40 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8491 |
| Provisional designation | 1989 YL5 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.35 |
| Orbital period | 3.75 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.04 – 2.79 au |
| Eccentricity | 0.154 |
| Inclination | 1.86° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.