(14413) Geiger Main-belt Asteroid
Discovered on 5 September 1991 by Borngen, F., Schmadel, L. D. at Tautenburg.
German physicist Hans Geiger (1882-1945) studied radioactivity and scattering of α-particles. Together with Erwin Wilhelm Mueller, he invented the GM (Geiger) counter, which became an important measuring instrument in nuclear physics. Together with K. Scheel, he edited the 24-volume Handbuch der Physik (1926-1929).Naming citation (20000726/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Geiger is today
Seen from above the solar system on 2026-10-14: Geiger is 1.98 au from the Sun and 1.53 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 14413 |
| Provisional designation | 1991 RT3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.85 km (#13,105 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.227 |
| Absolute magnitude (H) | 14.48 |
| Orbital period | 3.46 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.95 – 2.62 au |
| Eccentricity | 0.147 |
| Inclination | 5.02° |
| Closest distance between its orbit and Earth's (MOID) | 0.958 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Hans
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- (4991) Hansuess
- (5323) Fogh
- (5475) Hanskennedy
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- (9689) Freudenthal
- (10542) Ruckers
- (12672) Nygardh
- (12729) Berger
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