(21118) Hezimmermann Main-belt Asteroid
Discovered on 24 September 1992 by Schmadel, L. D., Borngen, F. at Tautenburg.
Helmut Zimmermann (b. 1926), director of Jena University Observatory from 1969 to 1978, worked on the interstellar radiation field and cloud collisions. He was the integrating figure in the new study course of astronomy for student teachers in Germany. The citation was prepared by W. Pfau.Naming citation (20060613/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hezimmermann is today
Seen from above the solar system on 2026-10-14: Hezimmermann is 1.94 au from the Sun and 1.12 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21118 |
| Provisional designation | 1992 SB17 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.86 |
| Orbital period | 3.75 years |
| Semi-major axis | 2.41 au |
| Perihelion – aphelion | 1.94 – 2.88 au |
| Eccentricity | 0.195 |
| Inclination | 2.05° |
| Closest distance between its orbit and Earth's (MOID) | 0.952 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Helmut
All asteroids named after someone called Helmut
Also discovered on 24 September 1992
- (8690) Swindle
- (11916) Wiesloch
- (13092) Schrodinger
- (15761) Schumi
- (16589) Hastrup
- (20035) Lauriroche
- (22348) Schmeidler
- (24749) Grebel
- (24750) Ohm
- (29250) Helmutmoritz
- (30883) de Broglie
- (32855) Zollitsch