(189944) Leblanc Main-belt Asteroid
Discovered on 3 October 2003 by J. W. Young at Wrightwood.
Thierry Leblanc (b. 1967) is the group supervisor of the Atmospheric Lidar Group, and Principal Investigator of stratospheric and tropospheric ozone, and temperature lidar measurements at JPL's Table Mountain Facility.Naming citation (MPC batch dated 2015-01-05), IAU / Minor Planet Center, via NASA/JPL
Where Leblanc is today
Seen from above the solar system on 2026-10-14: Leblanc is 3.05 au from the Sun and 2.08 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 189944 |
| Provisional designation | 2003 TX |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.17 km (#8,680 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0560 |
| Absolute magnitude (H) | 14.99 |
| Orbital period | 5.68 years |
| Semi-major axis | 3.18 au |
| Perihelion – aphelion | 3.05 – 3.32 au |
| Eccentricity | 0.0425 |
| Inclination | 11.0° |
| Closest distance between its orbit and Earth's (MOID) | 2.08 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Thierry
- (11896) Camelbeeck
- (12761) Pauwels
- (13396) Midavaine
- (19458) Legault
- (69949) Thierrydemange
- (211473) Herin
All asteroids named after someone called Thierry