(29210) Robertbrown Main-belt Asteroid
Discovered on 4 September 1991 by E. W. Elst at La Silla.
Robert Brown (1773–1858) was a Scottish botanist who made important contributions to botany largely through his pioneering use of the microscope. In 1827, while examining grains of pollen from the plant Clarkia pulchella in water under a microscope, he discovered Brownian motion.Naming citation (WGSBN Bull. 3, #12, 14), IAU / Minor Planet Center, via NASA/JPL
Where Robertbrown is today
Seen from above the solar system on 2026-10-14: Robertbrown is 2.99 au from the Sun and 3.84 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29210 |
| Provisional designation | 1991 RB12 |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.08 km (#5,700 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0940 |
| Rotation period | 2.00 hours |
| Absolute magnitude (H) | 13.87 |
| Orbital period | 4.71 years |
| Semi-major axis | 2.81 au |
| Perihelion – aphelion | 2.33 – 3.29 au |
| Eccentricity | 0.172 |
| Inclination | 12.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.38 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
Also discovered on 4 September 1991
- (6789) Milkey
- (7420) Buffon
- (8370) Vanlindt
- (8515) Corvan
- (9346) Fernandel
- (9594) Garstang
- (10784) Noailles
- (10785) Dejaiffe
- (11059) Nulliusinverba
- (12301) Eotvos
- (13533) Junili
- (13534) Alain-Fournier