(29212) Zeeman Main-belt Asteroid
Discovered on 10 September 1991 by F. Borngen at Tautenburg.
Dutch physicist Pieter Zeeman (1865-1943) discovered the splitting of spectral lines in the magnetic field, allowing the analysis of the atomic fine structure. He also made a verification of special relativity. He shared the 1902 Nobel Prize for physics with his teacher Lorentz.Naming citation (20020526/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Zeeman is today
Seen from above the solar system on 2026-10-14: Zeeman is 2.95 au from the Sun and 2.28 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29212 |
| Provisional designation | 1991 RA41 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.92 km (#12,935 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.288 |
| Absolute magnitude (H) | 14.41 |
| Orbital period | 4.89 years |
| Semi-major axis | 2.88 au |
| Perihelion – aphelion | 2.75 – 3.02 au |
| Eccentricity | 0.0465 |
| Inclination | 2.31° |
| Closest distance between its orbit and Earth's (MOID) | 1.73 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Pieter
- (7059) Van Dokkum
- (9071) Coudenberghe
- (9664) Brueghel
- (10655) Pietkeyser
- (10970) de Zeeuw
- (12170) Vanvollenhoven
- (14019) Pourbus
- (15468) Mondriaan
- (20068) Peterbarthel
- (52226) Saenredam
- (333514) Kallemeyn
All asteroids named after someone called Pieter
Also discovered on 10 September 1991
- (6651) Rogervenable
- (8282) Delp
- (9189) Holderlin
- (10340) Jostjahn
- (11061) Lagerlof
- (17486) Hodler
- (27764) von Flue
- (27765) Brockhaus
- (43804) Peterting
- (65694) Franzrosenzweig