(100231) Monceau Outer Main-belt Asteroid
Discovered on 12 August 1994 by E. W. Elst at La Silla.
Henri-Louis Duhamel du Monceau (1700-1782), a French physician, naval engineer and botanist, served three times as president of the French Academy of Sciences. Although chiefly occupying himself with experiments on plant physiology, his most famous written work was the Eléments d´architecture naval 1752--1758.Naming citation (MPC batch dated 2013-07-22), IAU / Minor Planet Center, via NASA/JPL
Where Monceau is today
Seen from above the solar system on 2026-10-14: Monceau is 2.86 au from the Sun and 2.05 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 100231 |
| Provisional designation | 1994 PB20 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 9.25 km (#5,580 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0410 |
| Absolute magnitude (H) | 14.62 |
| Orbital period | 7.86 years |
| Semi-major axis | 3.95 au |
| Perihelion – aphelion | 2.79 – 5.12 au |
| Eccentricity | 0.294 |
| Inclination | 2.78° |
| Closest distance between its orbit and Earth's (MOID) | 1.79 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Louis
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- (11309) Malus
- (11796) Nirenberg
- (11969) Gay-Lussac
- (12715) Godin
- (12750) Berthollet
All asteroids named after someone called Louis
Also discovered on 12 August 1994
- (7142) Spinoza
- (8550) Hesiodos
- (9640) Lippens
- (9641) Demaziere
- (9778) Isabelallende
- (9879) Mammuthus
- (9880) Stegosaurus
- (10151) Rubens
- (10361) Bunsen
- (10841) Ericforbes
- (11095) Havana
- (11583) Breuer