(69756) Helenecourtois Main-belt Asteroid
Discovered on 24 July 1998 by ODAS at Caussols.
Hélène Courtois (b. 1970) is a French astrophysicist and university professor in Lyon. She pioneered a new era of cosmography by mapping large-scale gravitational flows. She co-discovered the Laniakea supercluster and several other major nearby superclusters including the hidden Vela supercluster.Naming citation (WGSBN Bull. 6, #9, 16), IAU / Minor Planet Center, via NASA/JPL
Where Helenecourtois is today
Seen from above the solar system on 2026-10-14: Helenecourtois is 2.55 au from the Sun and 1.83 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 69756 |
| Provisional designation | 1998 OY3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.01 km (#12,719 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0580 |
| Absolute magnitude (H) | 16.01 |
| Orbital period | 4.64 years |
| Semi-major axis | 2.78 au |
| Perihelion – aphelion | 2.54 – 3.02 au |
| Eccentricity | 0.0858 |
| Inclination | 3.29° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Helene
All asteroids named after someone called Helene