(18574) Jeansimon Main-belt Asteroid
Discovered on 28 November 1997 by ODAS at Caussols.
Jean-Louis Simon (b. 1940) works at the Paris Institut de Mécanique Céleste on analytical planetary theory. He produced the first values of the secular variation of the orbital semimajor axes of the planets.Naming citation (20020526/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Jeansimon is today
Seen from above the solar system on 2026-10-14: Jeansimon is 2.76 au from the Sun and 3.35 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18574 |
| Provisional designation | 1997 WO23 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 11.1 hours |
| Absolute magnitude (H) | 14.72 |
| Orbital period | 4.57 years |
| Semi-major axis | 2.75 au |
| Perihelion – aphelion | 2.40 – 3.10 au |
| Eccentricity | 0.126 |
| Inclination | 7.66° |
| Closest distance between its orbit and Earth's (MOID) | 1.42 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Louis
- (6605) Carmontelle
- (7645) Pons
- (8617) Fellous
- (9135) Lacaille
- (9969) Braille
- (10930) Jinyong
- (11248) Bleriot
- (11309) Malus
- (11796) Nirenberg
- (11969) Gay-Lussac
- (12715) Godin
- (12750) Berthollet
All asteroids named after someone called Louis