(46731) Prieurblanc Main-belt Asteroid
Discovered on 4 October 1997 by Demeautis, C., Buttani, P. at Hottviller.
Pierre Prieur-Blanc (1921–2002) was one of the three people involved in the construction of the Paris Observatory's coronagraphic station on Pic de Chateau-Renard at Saint-Véran in the Hautes-Alpes.Naming citation (WGSBN Bull. 4, #10, 7), IAU / Minor Planet Center, via NASA/JPL
Where Prieurblanc is today
Seen from above the solar system on 2026-10-14: Prieurblanc is 2.78 au from the Sun and 3.57 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 46731 |
| Provisional designation | 1997 TB18 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 17.4 hours |
| Absolute magnitude (H) | 13.97 |
| Orbital period | 5.12 years |
| Semi-major axis | 2.97 au |
| Perihelion – aphelion | 2.70 – 3.24 au |
| Eccentricity | 0.0897 |
| Inclination | 9.66° |
| Closest distance between its orbit and Earth's (MOID) | 1.71 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Pierre
- (2190) Coubertin
- (5439) Couturier
- (5442) Drossart
- (5523) Luminet
- (8190) Bouguer
- (10139) Ronsard
- (11401) Pierralba
- (11946) Bayle
- (12007) Fermat
- (12042) Laques
- (12324) Van Rompaey
- (12580) Antonini
All asteroids named after someone called Pierre