(31387) Lehoucq Main-belt Asteroid
Discovered on 16 December 1998 by ODAS at Caussols.
Roland Lehoucq (b. 1965) is a French astrophysicist, working on cosmic topology. He is also very active in public outreach and is well known for his books on science fiction novels and movies such as Making Science with StarWars. Since 2012, he has been the president of the annual sci-fi convention “les Utopiales”.Naming citation (MPC batch dated 2018-10-26), IAU / Minor Planet Center, via NASA/JPL
Where Lehoucq is today
Seen from above the solar system on 2026-10-14: Lehoucq is 2.26 au from the Sun and 2.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31387 |
| Provisional designation | 1998 YA2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.46 km (#14,084 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.257 |
| Rotation period | 2.74 hours |
| Absolute magnitude (H) | 14.69 |
| Orbital period | 3.28 years |
| Semi-major axis | 2.21 au |
| Perihelion – aphelion | 2.10 – 2.31 au |
| Eccentricity | 0.0494 |
| Inclination | 4.43° |
| Closest distance between its orbit and Earth's (MOID) | 1.10 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Roland
- (10087) Dechesne
- (11585) Orlandelassus
- (11823) Christen
- (12870) Rolandmeier
- (26984) Fernand-Roland
- (28105) Santallo
- (79842) Jourdain
- (362420) Rolandgarros
- (428102) Rolandwagner
All asteroids named after someone called Roland