(20546) Michaelfruhauf Main-belt Asteroid
Discovered on 8 September 1999 by LINEAR at Socorro.
Michael Frühauf (b. 1988) is a German physicist who has worked on determining the flux density of small asteroids coming close to Earth. He also coded the first version of the short-term asteroid impact warning system “Meerkat” for the European Space Agency.Naming citation (WGSBN Bull. 6, #11, 26), IAU / Minor Planet Center, via NASA/JPL
Where Michaelfruhauf is today
Seen from above the solar system on 2026-10-14: Michaelfruhauf is 3.42 au from the Sun and 2.66 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20546 |
| Provisional designation | 1999 RA105 |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.4 km (#4,337 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0850 |
| Rotation period | 0.480 hours |
| Absolute magnitude (H) | 13.29 |
| Orbital period | 5.50 years |
| Semi-major axis | 3.12 au |
| Perihelion – aphelion | 2.80 – 3.43 au |
| Eccentricity | 0.100 |
| Inclination | 3.88° |
| Closest distance between its orbit and Earth's (MOID) | 1.81 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Michael
- (3192) A'Hearn
- (4477) Kelley
- (4599) Rowan
- (5373) Michaelkurtz
- (5554) Keesey
- (5569) Colby
- (6406) Mikejura
- (6569) Ondaatje
- (7738) Heyman
- (7936) Mikemagee
- (8032) Michaeladams
- (8129) Michaelbusch
All asteroids named after someone called Michael
Also discovered on 8 September 1999
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- (19629) Serra
- (19694) Dunkelman
- (19695) Billnye
- (20544) Kimhansell
- (20545) Karenhowell
- (20547) Michimani
- (20548) Milewski