(41800) Robwilliams Main-belt Asteroid
Discovered on 25 November 2000 by C. W. Juels at Fountain Hills.
Robert A. Williams (b. 1942) is a psychiatrist and author who has been the director of the Biological Psychiatry Institute in Phoenix since 1987. His recent works include Brain Basics (1999)---a book for everyone about biological psychiatry---and the Merry The Cranberry Series of titles about children's values (2002).Naming citation (20040306/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Robwilliams is today
Seen from above the solar system on 2026-10-14: Robwilliams is 2.03 au from the Sun and 2.81 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 41800 |
| Provisional designation | 2000 WM19 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.10 km (#6,471 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0750 |
| Absolute magnitude (H) | 14.14 |
| Orbital period | 4.20 years |
| Semi-major axis | 2.60 au |
| Perihelion – aphelion | 1.99 – 3.22 au |
| Eccentricity | 0.235 |
| Inclination | 25.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.17 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Robert
- (1955) McMath
- (3514) Hooke
- (3875) Staehle
- (4564) Clayton
- (4809) Robertball
- (5109) Robertmiller
- (5308) Hutchison
- (5477) Holmes
- (5585) Parks
- (5636) Jacobson
- (5739) Robertburns
- (5817) Robertfrazer
All asteroids named after someone called Robert