(400811) Gillesfontaine Main-belt Asteroid
Discovered on 15 April 2010 by WISE at WISE.
Gilles Fontaine (b. 1948) is a Canadian astrophysicist at the Université de Montréal. He has made fundamental and lasting contributions to our knowledge of white dwarf interiors, evolution and pulsations. He is an inspiring teacher and mentor, who has trained a new generation of leaders in the field.Naming citation (WGSBN Bull. 3, #2, 7), IAU / Minor Planet Center, via NASA/JPL
Where Gillesfontaine is today
Seen from above the solar system on 2026-10-14: Gillesfontaine is 2.55 au from the Sun and 2.21 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 400811 |
| Provisional designation | 2010 GF153 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.06 km (#16,983 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0720 |
| Absolute magnitude (H) | 17.14 |
| Orbital period | 3.81 years |
| Semi-major axis | 2.44 au |
| Perihelion – aphelion | 1.79 – 3.09 au |
| Eccentricity | 0.266 |
| Inclination | 14.7° |
| Closest distance between its orbit and Earth's (MOID) | 0.783 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Gilles
All asteroids named after someone called Gilles